WAEC SSCE - Economics - 2005

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When the value of a nation's export is greater than its imports, it means that the country is selling more goods and services to other countries than it is buying from them. This is called a favorable balance of trade, which can be good for the economy because it generates more income for the country and creates jobs. It can also help to improve the country's currency value and increase its foreign reserves. On the other hand, if a country's imports are greater than its exports, it is called an unfavorable balance of trade. This can lead to a trade deficit, which means the country is spending more money on imports than it is earning from exports. This can have negative effects on the economy, such as currency depreciation and an increase in national debt.

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The theory of comparative cost advantage is associated with David Ricardo, a British economist who lived in the late 18th and early 19th centuries. The theory explains that countries can benefit from trading with each other by specializing in the production of goods and services that they can produce at a lower opportunity cost, and then trading with other countries for goods and services that they cannot produce as efficiently. For example, if Country A can produce both wheat and cotton, but it can produce more wheat than cotton relative to Country B, which can produce both wheat and cotton but can produce more cotton than wheat relative to Country A, then it makes sense for Country A to specialize in producing wheat and Country B to specialize in producing cotton. By doing so, both countries can then trade with each other, with Country A exporting wheat to Country B in exchange for cotton, and vice versa. This way, both countries can increase their overall economic output and welfare by producing and consuming more of the goods and services that they are relatively more efficient at producing, thanks to the gains from trade.

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When Olu chose to use the 150.00 Naira to buy a T-shirt instead of a textbook, he had to forgo the opportunity of buying the textbook. This forgone alternative is referred to as the opportunity cost. Therefore, Olu's opportunity cost of buying the T-shirt is the textbook he could have purchased with the same amount. On the other hand, the 150.00 Naira used to purchase the T-shirt is Olu's money cost or actual cost. So, the statement "Olu's opportunity cost is the textbook" is the correct answer.

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The objective of the Organization of the Petroleum Exporting Countries (OPEC) is to stabilize and coordinate the prices of crude oil in the global market. This is done by regulating the supply of oil among its member countries and ensuring that the prices of oil remain at a level that is fair and sustainable for both the consumers and producers. Therefore, the option that is not an objective of OPEC is "Stagnation of developed economies". OPEC's main focus is on managing the supply of oil and ensuring that prices remain stable and fair, rather than deliberately trying to hinder the growth or development of any particular economy.

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A group of firms producing similar commodities for the same market is called an industry. An industry is made up of companies that are engaged in the production or sale of a particular type of product or service. These companies compete with each other to provide the best product at the most competitive price to the consumers in the market. Examples of industries include the automobile industry, the technology industry, and the food industry.

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The amount of goods that are available to be sold in the market at different prices is called a "supply schedule". It is presented in a table that shows the different quantities of a product that suppliers are willing and able to offer for sale at various prices. For instance, a supply schedule for apples could show that at a price of $1 per pound, farmers are willing and able to supply 1000 pounds of apples, and at a price of $2 per pound, they are willing and able to supply 2000 pounds of apples. The supply schedule helps us to understand the relationship between the price of a product and the amount of it that is supplied to the market. It shows that as the price of a product increases, the quantity supplied of that product also increases. This is because suppliers are motivated by the higher prices to offer more of the product for sale.

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One reason for the low agricultural production in West African countries is that farmers lack the necessary finance and technology required for efficient farming. This means that they may not have access to modern farming equipment, quality seeds, fertilizers, and other inputs that could increase their yield. Additionally, they may not have the financial means to purchase these inputs or invest in other farming activities that could improve their productivity. Without these resources, farmers may struggle to produce enough crops to meet their needs and those of the population, leading to low agricultural production.

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Central banks control credit in the economy primarily through the use of open market operations. Open market operations involve buying or selling government securities, such as bonds, in the open market. When the central bank buys these securities, it increases the amount of money in circulation, which can make it easier for banks to lend and for businesses and consumers to borrow. Conversely, when the central bank sells these securities, it decreases the amount of money in circulation, which can make it harder to borrow and may reduce inflation. Legal tender, travelers' checks, and foreign exchange instruments are not typically used by central banks to control credit in the economy.

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A mixed economy is an economic system that has both private and government-owned enterprises. In this type of economy, the private sector and the government share the responsibility for the production and distribution of goods and services. Private enterprises are owned and operated by individuals or groups of individuals, while state enterprises are owned and operated by the government. The private sector is driven by profit and competition, while state enterprises are driven by the government's goals and objectives, such as providing essential services to the public. A mixed economy can take many forms, with varying degrees of government intervention and regulation. Some countries have a mixed economy with a larger private sector, while others have a larger public sector. The goal of a mixed economy is to strike a balance between the benefits of a market-driven economy and the need for government intervention to ensure social welfare and prevent market failures.

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The desire for goods without the ability to pay is called "wants". Wants are the desires or aspirations of people for goods and services that satisfy their needs or give them pleasure. However, wants alone do not constitute effective demand because effective demand requires the ability and willingness to pay for those goods and services. Effective demand is the willingness and ability of consumers to buy goods or services at a given price. Joint demand refers to the demand for two or more goods that are used together to satisfy a particular want or need. Choice is the act of selecting one option from a set of alternatives based on personal preference or other factors.

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One factor that has slowed down the rate of industrial development in West Africa is inadequate technology. This means that the tools and machinery used in industries are not efficient enough to produce goods in large quantities and at a lower cost. As a result, the industries cannot compete with those in other regions that have better technology. This leads to a lower level of industrialization, which affects economic growth and development in the region. While other factors such as government intervention in business activities, increased demand for local goods, and increasing rate of manpower production can also affect industrial development, inadequate technology is one of the primary reasons for the slow rate of industrialization in West Africa.

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At the equilibrium price, quantity demanded is equal to quantity supplied. The equilibrium price is the point at which the quantity of a product or service demanded by buyers is equal to the quantity of the product or service supplied by sellers. At this point, there is no shortage or surplus of the product or service, as the market has reached a balance between what buyers are willing to pay and what sellers are willing to accept. If the price is below the equilibrium level, then the quantity demanded by buyers will be greater than the quantity supplied by sellers, leading to a shortage and upward pressure on prices. Conversely, if the price is above the equilibrium level, then the quantity supplied by sellers will be greater than the quantity demanded by buyers, leading to a surplus and downward pressure on prices. Therefore, at the equilibrium price, the quantity demanded by buyers and the quantity supplied by sellers are in balance, which leads to a stable market price and quantity.

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When a worker changes from one type of job to another, it is called occupational mobility of labour. Occupational mobility of labor refers to the ability of a worker to move from one occupation to another. It can be voluntary, such as when a worker decides to change careers to pursue a new interest or increase their income, or involuntary, such as when a worker loses their job and must find work in a different occupation. Occupational mobility is an important aspect of a healthy job market because it allows workers to find employment that is a better fit for their skills, interests, and abilities. It also enables businesses to find the workers with the skills they need to succeed, which can boost productivity and economic growth.

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The case of including the cost of both raw materials and finished products in calculating the national income of a country X is an example of double counting. Double counting happens when a transaction or a product is counted more than once in the calculation of a certain economic value or indicator, resulting in an overestimation of the value or indicator. In this case, the raw materials are already included in the cost of the finished products, so counting them separately would result in an overestimation of the national income. It is important to avoid double counting in economic calculations to ensure accurate and reliable results.

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The direct exchange of one good or service for another good or service without using money is known as barter. For example, if you trade a dozen eggs for a loaf of bread with your neighbor, that's bartering. Bartering was a common way of exchanging goods and services before the invention of money. It's still used in some parts of the world today, especially in rural areas where cash is scarce or in situations where money is not an option.

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Age distribution is important for the government because it provides them with useful information about the number of people in different age groups within a population. This information can be used to plan and provide better services such as healthcare, education, and social welfare to the population. Additionally, age distribution can help the government understand the needs of different age groups and tailor policies and programs to address those needs. For example, if there is a large population of young people, the government may need to focus on providing more job opportunities and education programs to help them build a better future. Similarly, if there is a large population of elderly people, the government may need to focus on providing better healthcare and social support services. So, in summary, age distribution helps the government to undertake effective planning that is responsive to the needs of the population.

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Wholesalers are often criticized for increasing prices. This is because they buy products in bulk from producers at a lower price and then sell them to retailers at a higher price. This margin allows them to make a profit, but it also increases the cost of the product for the end consumer. However, it is worth noting that wholesalers also play an important role in the supply chain by helping to break the bulk and finance producers. They may also provide after-sales services, such as repairs or returns.

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The business unit where the owners are mostly customers is the co-operative. A co-operative is an organization owned and operated by a group of individuals who come together to meet their common needs and aspirations through a jointly owned and democratically controlled enterprise. The owners of a co-operative are also its customers, and they typically have equal voting rights regardless of the amount of money they have invested in the co-operative. In a co-operative, the profits are distributed among the owners in proportion to the amount of business they do with the co-operative, rather than based on their shareholdings. This model encourages members to be loyal customers and contributes to the sustainability of the co-operative.

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Farming, mining, and fishing are examples of primary production. This means that they involve the extraction or cultivation of raw materials directly from natural resources. In farming, crops are grown and animals are raised for food and other agricultural products. In mining, minerals and other valuable resources are extracted from the earth. And in fishing, fish and other seafood are harvested from the oceans, rivers, and other bodies of water. These primary production activities are the foundation of many economies, as they provide the raw materials that are used in secondary and tertiary production processes to create finished goods and services.

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The transfer of ownership of a public enterprise to individuals and firms is called privatization. Public enterprises are businesses or organizations that are owned and operated by the government. Privatization involves selling these enterprises to private individuals or companies who will then own and operate them for profit. The rationale behind privatization is to improve the efficiency and performance of the enterprise by subjecting it to market forces and competition. Private firms are motivated by profit, which incentivizes them to operate the enterprise more efficiently and effectively. This can lead to improvements in productivity, cost reduction, and innovation. Privatization can also generate revenue for the government, which can be used for other purposes such as debt reduction or investment in other areas. Commercialization, on the other hand, refers to the process of introducing market principles and practices into a government-owned enterprise without necessarily transferring ownership to the private sector. Nationalization is the opposite of privatization, which involves the transfer of private enterprises to government ownership and control. Restructuring involves making changes to the organization or management structure of an enterprise in order to improve its efficiency and performance.

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The term demand for money refers to the willingness of people to hold or keep money. It is the desire of individuals and households to have a certain amount of money to meet their daily needs, to make purchases, and to cover unexpected expenses. This demand for money is influenced by several factors such as interest rates, inflation, income levels, and economic conditions. The higher the interest rate, the lower the demand for money, and the lower the interest rate, the higher the demand for money. Similarly, the higher the income level, the higher the demand for money, and the lower the income level, the lower the demand for money.

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The production factor whose entire world supply is fixed is "land". This means that the total amount of land available in the world is limited, and cannot be increased beyond its current amount. Unlike other factors of production such as skilled labor, capital goods, and entrepreneurship, land is a finite resource that cannot be created or expanded. This has important implications for industries and economies that rely on land for production. It means that as demand for land-based resources and activities grows, such as agriculture or real estate development, competition for access to limited land resources will intensify. This can lead to higher prices for land, which in turn can affect the profitability and viability of certain industries. Understanding the limited supply of land is an important consideration for businesses and policymakers when making decisions about resource allocation, land use planning, and economic development strategies.

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Government revenue from the groundnut industry comes from taxes. When individuals or businesses engage in the production, processing, or sale of groundnuts, the government collects taxes on their income or profits. These taxes may include income tax, corporate tax, sales tax, or value-added tax (VAT), among others. The government then uses the revenue generated from these taxes to fund public services and infrastructure, such as schools, hospitals, roads, and public utilities, among others. Therefore, taxes are a significant source of government revenue in the groundnut industry and other sectors of the economy.

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In a capitalist system, goods are produced for those who want them and can also pay for them. This means that producers create goods and services that they believe people will want to buy, and then sell them to those who have the ability and willingness to pay. The aim of producers is to make a profit, which means they want to sell as many goods as possible to those who are willing and able to buy them. In other words, the capitalist system is driven by the principles of supply and demand, where goods are produced based on what people want and are willing to pay for.

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The essential characteristic of a market economy is consumer sovereignty. This means that consumers have the power to determine what goods and services are produced, how much they are willing to pay for them, and in what quantity they want them. In a market economy, producers respond to the demand of consumers and try to produce goods and services that will satisfy their needs and preferences in order to earn profits. Therefore, in a market economy, the consumers are in control and have the power to shape the economy by making decisions about what they want to buy and at what price. This leads to competition among producers to offer better quality products at lower prices, which results in consumer surplus.

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Mono-product economies are those that produce only one main commodity. This means that the economy of a country or region is heavily dependent on the production and export of a single product. For example, an economy that relies heavily on the production and export of oil would be considered a mono-product economy. These types of economies can be vulnerable to fluctuations in the price of the commodity they produce, as well as changes in global demand.

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The Economic Community of West African States (ECOWAS) is an example of "economic integration". Economic integration is a process by which countries come together to reduce or eliminate trade barriers and coordinate economic policies. ECOWAS is a regional organization made up of fifteen West African countries that have agreed to work together to promote economic integration in the region. Through ECOWAS, member states have established a number of institutions and agreements to promote regional trade and investment, including the establishment of a free trade area, a customs union, and a common external tariff. ECOWAS also aims to harmonize economic policies in areas such as agriculture, industry, transportation, and telecommunications to facilitate regional cooperation and development. The goal of economic integration is to create a larger and more efficient market that benefits all member states, by facilitating trade and investment flows, encouraging specialization and economies of scale, and promoting the free movement of goods, services, capital, and people across borders. In summary, ECOWAS is an example of economic integration because it aims to promote regional economic cooperation and reduce trade barriers among member states in West Africa.

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The size of a country's population is determined by several factors, but among the options provided, three are relevant: birth rate, death rate, and migration rate. The birth rate is the number of births per 1,000 people in a given period, usually per year. The higher the birth rate, the more likely the population will grow. The death rate, on the other hand, is the number of deaths per 1,000 people in a given period, usually per year. The higher the death rate, the more likely the population will decrease. The migration rate refers to the movement of people into and out of a country. It can be positive, indicating more people are coming in than leaving, or negative, indicating more people are leaving than coming in. Migration can affect the population size either way, depending on whether the net migration rate is positive or negative. The other options, importation rate and unemployment rate, are not directly related to population size. The importation rate refers to the amount of goods and services imported into a country, while the unemployment rate refers to the percentage of the labor force that is unemployed. These factors may indirectly affect population size, but they are not direct determinants. Therefore, the correct answer is (I), (II), and (III).

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A persistent and appreciable rise in the general level of price is known as inflation. Inflation occurs when the supply of money in the economy increases faster than the supply of goods and services. This causes the value of money to decrease, which in turn leads to an increase in the prices of goods and services. Inflation can be caused by various factors such as an increase in demand for goods and services, an increase in the cost of production, or a decrease in the supply of goods and services. Inflation reduces the purchasing power of money, which means that consumers can buy fewer goods and services with the same amount of money. It also affects savings and investments, as the real value of money decreases over time due to inflation.

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The profit of the producers can be calculated as the total revenue minus the total cost. In other words, to calculate the profit, you would add up all the money that a producer earned from selling their goods or services, and then subtract all the costs associated with producing and selling those goods or services. This includes things like the cost of materials, labor, and any other expenses related to running the business. It's important to note that profit is different from revenue. Revenue is simply the total amount of money that a producer earns from selling their goods or services, while profit takes into account the costs of producing and selling those goods or services. To calculate the profit, you would subtract the total cost from the total revenue, which will give you the amount of money that the producer has earned after all expenses have been paid.

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Discounting a bill of exchange means that the bill is bought for less than its face value by a financial institution or a bank. A bill of exchange is a written order from one party to another to pay a certain amount of money on a specific date in the future. The holder of the bill may need cash before the due date, and they can get the money by discounting the bill of exchange at a bank or financial institution. The bank or financial institution pays the holder the present value of the bill, which is calculated by deducting the discount or interest from the face value of the bill. The bank then collects the full amount from the party responsible for paying the bill on the due date. Discounting a bill of exchange provides the holder with immediate cash, which can be used for various purposes such as paying bills, purchasing inventory, or financing other business needs. The bank earns a profit by charging a discount fee, which is the difference between the face value of the bill and the discounted value. In summary, discounting a bill of exchange means that it is bought for less than its face value by a bank or financial institution, providing the holder with immediate cash and the bank with a profit.

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To achieve an equilibrium position, the consumer must buy so much of each commodity whose price is equal to its "marginal utility". Marginal utility is the additional satisfaction or usefulness that a consumer derives from consuming one more unit of a good or service. As a consumer purchases more units of a good, the marginal utility of each additional unit consumed decreases, meaning that the consumer is willing to pay less for each additional unit consumed. To achieve equilibrium, a consumer will continue to purchase additional units of a good until the marginal utility of the good is equal to its price. At this point, the consumer is no longer willing to pay more for the good than the additional satisfaction they will receive from consuming it. For example, if a consumer is considering purchasing a second slice of pizza, they will compare the marginal utility of the second slice to its price. If the marginal utility of the second slice is greater than its price, the consumer will purchase the second slice. However, if the marginal utility of the second slice is less than its price, the consumer will not purchase the second slice, as they will not receive enough additional satisfaction to justify the cost. In summary, achieving an equilibrium position in consumption requires the consumer to purchase additional units of a good until the marginal utility of the good is equal to its price. This ensures that the consumer is maximizing their satisfaction while also taking into account the cost of the good.

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One-man businesses are popular in West Africa because of the ease of entry, small capital required, and limited entrepreneurial skills needed. However, they are not popular because of the tendency to become joint-stock companies. Joint-stock companies require more capital and expertise, making them less accessible to small business owners. Additionally, one-man businesses may prefer to maintain control and ownership over their business, rather than sharing it with others through a joint-stock company structure.

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To improve the balance of payments position in West African countries, there must be an increase in the rate of exportation of goods and services. This means that the countries in West Africa should focus on producing and selling more products and services to other countries, which will bring in more foreign exchange. Increasing exports can help to improve the balance of payments by generating more income for the country and reducing the need for imports. This can also help to increase the country's foreign reserves, which can be used to pay for imports and other expenses. Removing barriers to importation of goods and services or increasing domestic consumption of foreign produced goods may have a negative impact on the balance of payments, as it can lead to more imports and less focus on local production and exports. However, the development of the local market can also help to improve the balance of payments by promoting local consumption and reducing the need for imports. In summary, to improve the balance of payments position in West African countries, increasing the rate of exportation of goods and services is the most effective solution.

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Price control refers to a policy of ensuring stable prices in the market. It is a mechanism that is implemented by the government to prevent the prices of goods and services from rising too high or falling too low. This is done by setting a maximum price that sellers can charge for a particular product or service, or by setting a minimum price that buyers must pay. The aim of price control is to protect consumers from price gouging and ensure that goods and services are affordable for everyone. However, price control can also have negative consequences, such as reducing the supply of goods and creating shortages. Therefore, it is a controversial policy that requires careful consideration and implementation.

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A commercial bank's deposits are "liabilities". In simple terms, a liability is an obligation or debt that an entity owes to another party. When an individual or business deposits money into a commercial bank, they are essentially lending that money to the bank. As a result, the bank is obligated to repay the depositor the full amount of their deposit on demand or according to the terms of the account. Therefore, a bank's deposits represent the amount of money that the bank owes to its depositors. They are classified as liabilities on the bank's balance sheet, alongside other obligations such as loans, bonds, and accounts payable. On the other hand, the assets of a commercial bank include the loans it has made to borrowers, as well as investments in securities and other financial instruments. The difference between a bank's assets and liabilities is its "capital", which represents the net worth of the bank and serves as a cushion against potential losses. In summary, a commercial bank's deposits are liabilities because they represent the amount of money that the bank owes to its depositors.

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Economic activities are undertaken to solve the problem of scarcity. Scarcity means that resources are limited, but human wants and needs are infinite. Therefore, people have to make choices about how to use their limited resources to satisfy their unlimited wants and needs. This is the problem that economic activities aim to solve. By engaging in production, trade, and consumption, people try to allocate their resources in the most efficient and effective way possible to meet their needs and wants given the scarcity of resources. Opportunity cost is a concept related to scarcity, which refers to the cost of forgoing one option in favor of another. The desire to spend more income on consumption is a result of human wants and needs, which are influenced by factors such as culture, society, and individual preferences, but ultimately stem from the fundamental problem of scarcity.

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Based on the given information, Mr. Bala's tax rate is 10% of his income ($80.00 ÷ $800.00 = 0.10 or 10%), while Mr. Jatau's tax rate is also 10% of his income ($120.00 ÷ $1,200.00 = 0.10 or 10%). A tax system is considered progressive if the tax rate increases as income increases. In this case, since both Mr. Bala and Mr. Jatau pay the same tax rate of 10%, regardless of their income levels, the tax system is proportional. A proportional tax system means that the tax rate remains the same regardless of the taxpayer's income level. This is also known as a flat tax. In contrast, a regressive tax system means that the tax rate decreases as income increases, and an ad-valorem tax is a tax that is based on the value of a good or service, rather than a person's income.

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A list of consumer's wants arranged in order of priorities is known as a scale of preference. It is a tool used to help consumers make choices by ranking their needs or wants in order of importance. For example, if a person has a limited budget and needs to buy groceries, pay rent, and buy clothes, they can use a scale of preference to decide which item is the most important to them. They would rank their needs in order of importance and allocate their budget accordingly. The scale of preference helps consumers to make informed decisions about how to allocate their limited resources. It allows them to identify their most important needs or wants and prioritize them over less important ones. By doing so, they can maximize their satisfaction and make the most of their available resources.

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If the elasticity of demand for a commodity is less than one, it means that the quantity demanded of that commodity is not very sensitive to changes in its price. In other words, a small change in price will result in a proportionally smaller change in quantity demanded. In this scenario, we say that demand is inelastic because changes in price have a relatively small impact on the quantity demanded. This usually occurs for necessities or products with few substitutes, where consumers are willing to pay a higher price because they need the product and cannot easily find alternatives. For example, if the price of insulin increases, diabetic patients will still need to purchase insulin to manage their condition, so they will likely continue buying it even if the price increases. Therefore, the demand for insulin is inelastic.

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Acceptability, durability, homogeneity, and portability are all attributes of good money. Acceptability means that people are willing to accept the money in exchange for goods and services. Durability means that the money must be able to withstand wear and tear and maintain its value over time. Homogeneity means that all units of the money must be identical, so that people can easily recognize and compare their value. Portability means that the money must be easy to carry around and transfer from one person to another. Money is a medium of exchange that is used to facilitate transactions in an economy. It serves as a unit of account, a store of value, and a standard of deferred payment. Good money must possess these attributes to function effectively in an economy. Acceptability ensures that people are willing to use the money in exchange for goods and services, while durability and homogeneity ensure that the money retains its value and is easily recognizable. Portability ensures that the money can be easily exchanged and used for transactions. Banks and governments play a role in the regulation and management of money, but the attributes described above are essential for money to function effectively in an economy.

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The factor determining price elasticity of demand for a commodity is the availability of close substitutes. When a commodity has many close substitutes, consumers have more options to choose from, and they can easily switch to another product if the price of their preferred commodity increases. In this case, the demand for the commodity is said to be elastic, meaning that a change in price will have a significant impact on the quantity demanded. On the other hand, when a commodity has few or no close substitutes, consumers have limited options, and they may still purchase the product even if the price increases. In this case, the demand for the commodity is said to be inelastic, meaning that a change in price will have little impact on the quantity demanded. Therefore, the availability of close substitutes is an important determinant of price elasticity of demand for a commodity.

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The remuneration of the entrepreneur as a factor of production is called profit. Profit is the reward or income earned by an entrepreneur for taking risks and successfully operating a business. It is calculated by subtracting the total cost of production from the revenue generated from sales. Profit represents the residual income that remains after all the other factors of production, such as labor and capital, have been compensated for their contributions. In contrast, wages and salaries are paid to employees for their labor, and interest is paid to lenders for the use of capital.

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When all factors input are reduced by half, the production possibility curve will shift inwards. This means that the maximum amount of goods and services that can be produced with the reduced factors of production will be lower than before. The reason for this is that the production possibility curve represents the trade-off between producing different goods and services with limited resources. When the resources are reduced, the economy is no longer able to produce the same amount of goods and services as before, hence the production possibility curve shifts inwards. This represents a reduction in the potential output of the economy, which can have negative effects on economic growth and development.

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The lender of last resort in the banking system is the central bank. This means that when banks face a shortage of funds or are unable to borrow from other banks, they can borrow from the central bank at a higher interest rate. The central bank acts as a safety net to prevent a bank run and to maintain the stability of the financial system. By providing liquidity to banks, the central bank helps to ensure that they can continue to operate and meet the financial needs of their customers.

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The three columns are linked by \( \text{Income per day} = \text{Wage rate} \times \text{Hours worked} \). We rearrange this to fill the gaps.

(a) Hours worked \( = \dfrac{\text{Income}}{\text{Wage rate}} \):

• (i) At \$10 per hour: \( 10 \div 10 = 1 \) hour.
• (ii) At \$20 per hour: \( 60 \div 20 = 3 \) hours.
• (iii) At \$30 per hour: \( 150 \div 30 = 5 \) hours.

(b) Income per day \( = \text{Wage rate} \times \text{Hours} \):

• (i) At \$40: \( 40 \times 6 = \$240 \).
• (ii) At \$50: \( 50 \times 4 = \$200 \).
• (iii) At \$60: \( 60 \times 3 = \$180 \).

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(c)(i) The wage rate of \$40 per hour attracts the highest earnings, \$240 per day.

(c)(ii) The data give a backward-bending (regressive) supply curve of labour.

(c)(iii) Up to \$40 per hour, higher wages induce the worker to offer more hours (1, 3, 5, 6), so supply slopes upward. Beyond \$40, further wage increases cause hours to fall (6, 4, 3): the worker now feels rich enough to buy more leisure, so the income effect outweighs the substitution effect and the curve bends backward on itself.

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(a) A balance of payments deficit exists when a country's total payments to other countries (for imports of goods and services, and capital outflows) exceed its total receipts from them (from exports and capital inflows) over a given period. In other words, the country's foreign expenditure is greater than its foreign earnings, so it is a net debtor for that period, usually shown as an overall (or current-account) deficit financed by drawing on reserves or borrowing.

(b) Four measures to reduce a balance of payments deficit:

• Reduce imports: Impose or raise tariffs, quotas and import restrictions, and promote import-substitution industries and local production.
• Promote exports: Give incentives such as export subsidies, better quality and diversification of exports to earn more foreign exchange.
• Devaluation of the currency: Lowering the external value of the currency makes exports cheaper and imports dearer, improving the balance (provided demand is sufficiently elastic).
• Deflationary (contractionary) policies: Reduce domestic demand and incomes through higher taxes and reduced government spending or tighter money, cutting the demand for imports. (Exchange control and borrowing from abroad or the IMF can also help in the short run.)

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Role of development banks in the economic development of West African countries:

• Provision of long- and medium-term finance: They supply the long-term capital needed to establish and expand industries, agriculture and other projects that commercial banks are unwilling to finance.
• Financing of priority sectors: They channel funds into key development areas such as manufacturing, agriculture, housing and infrastructure, promoting balanced growth.
• Promotion of industrialisation and diversification: By funding new industries they help reduce dependence on a few primary exports and create a more diversified economy.
• Provision of technical and managerial advice: They carry out feasibility studies and give advisory services that improve the success rate of the projects they finance.
• Mobilisation of domestic and foreign capital: They raise savings at home and attract foreign investment and aid for development purposes.
• Encouragement of entrepreneurship and employment: By financing new ventures, including small and medium enterprises, they create jobs and develop indigenous entrepreneurs.
• Equity participation: They sometimes take up shares in enterprises, sharing risk and strengthening the capital base of firms.

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(a) Net migration is the difference between the number of people entering a country or area (immigrants/in-migrants) and the number leaving it (emigrants/out-migrants) over a given period. When in-migration exceeds out-migration the net migration is positive (net gain of population); when out-migration exceeds in-migration it is negative (net loss).

(b) Four economic effects of rural-to-urban migration:

• Reduced agricultural output in rural areas: The movement of able-bodied youths to the towns leaves farming to the aged, lowering food production and rural incomes.
• Urban unemployment and underemployment: Migrants often exceed the jobs available in the towns, raising urban unemployment and encouraging the growth of the informal sector.
• Pressure on urban infrastructure and social services: Overcrowding strains housing, water, electricity, transport and health facilities, leading to slums and higher living costs.
• Supply of labour and skills to industry, but rising social costs: Towns gain cheap labour for industry and commerce, yet also suffer congestion, crime and pollution. (Rural areas may benefit from remittances sent home by migrants.)

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(a) Trade by barter is the direct exchange of goods and services for other goods and services without the use of money. One person gives what he has in exchange for what he needs directly from another person, for example exchanging yams for cloth.

(b) Problems posed by trade by barter:

• Lack of double coincidence of wants: Exchange occurs only when each party has exactly what the other wants and wants exactly what the other has, which is difficult to achieve.
• Indivisibility of some goods: Goods such as a cow or a house cannot be split into small units to match the value of what is wanted in exchange.
• Absence of a common measure of value: There is no single yardstick for expressing the worth of goods, making it hard to fix rates of exchange.
• Difficulty in storing value: Wealth held as goods (especially perishables) deteriorates and cannot be stored for the future.
• Difficulty in deferred/future payments: Lending and repayment are hard because of disputes over the quality and quantity of goods to be returned later. (Bulkiness and problems of transporting goods for exchange are additional difficulties.)

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Four ways industrial development can promote agricultural productivity:

• Supply of farm inputs and machinery: Industries produce fertilisers, improved seeds, pesticides, tractors and other implements that raise crop and livestock yields.
• Provision of a market for agricultural raw materials: Agro-based industries (food processing, textiles, breweries) buy farm produce, giving farmers a steady, profitable outlet that encourages them to produce more.
• Processing and reduction of wastage: Processing and storage industries (canning, milling, refrigeration) preserve produce, reduce post-harvest losses and add value, raising farmers' incomes.
• Provision of infrastructure and employment/income: Industrial growth develops roads, power and credit facilities that serve agriculture, and the incomes earned in industry raise demand for food while some earnings are reinvested in farming. (Research and improved packaging by industries also improve quality and reduce spoilage.)

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(a) Capital goods are man-made goods that are not wanted for their own sake but are used to produce other goods and services. They are producer goods such as machinery, tools, factory buildings, equipment and raw materials. Unlike consumer goods, they satisfy wants indirectly by aiding further production.

(b) Problems associated with the distribution of goods:

• Poor transport network: Bad roads, few railways and inadequate transport raise costs and delay the movement of goods from producers to consumers, and cause spoilage of perishables.
• Inadequate storage and warehousing facilities: Lack of good storage leads to wastage, hoarding and seasonal scarcity.
• Too many middlemen: A long chain of intermediaries widens the gap between producer and consumer prices and increases the final price paid by consumers.
• Inadequate market information and communication: Producers and buyers lack information on prices and supply, leading to gluts in one area and scarcity in another.
• Insufficient capital and hoarding/adulteration: Distributors may lack funds to hold stock, and dishonest practices such as hoarding to create artificial scarcity distort distribution. (Insecurity and multiple taxes on the roads also hamper distribution.)

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From the diagram, the demand curve DD cuts the original supply curve SS at the initial equilibrium of quantity \(30\) tonnes and price \(\$100\) per tonne. When supply shifts to \(S_1S_1\), the new equilibrium is at quantity \(40\) tonnes and price \(\$40\) per tonne. All working below uses these read-off values.

(a)(i) Total revenue at the initial equilibrium

Total revenue is price multiplied by quantity sold, \(TR = P \times Q\).

The farmer earns \(\$3{,}000\) at the initial equilibrium.

(a)(ii) Total revenue after supply shifts to \(S_1S_1\)

After the shift the farmer earns \(\$1{,}600\).

(b) Change in total revenue when price falls from \(\$100\) to \(\$40\) per tonne

Total revenue falls by \(\$1{,}400\). Notice that although more maize is now sold (\(40\) tonnes instead of \(30\)), revenue still drops. This happens because the price cut of \(60\%\) is far larger in proportion than the rise in quantity, which is the tell-tale sign of an inelastic demand, confirmed below.

(c)(i) Price elasticity of demand for maize

Elasticity is measured along the demand curve DD, using the two price-quantity points it passes through: \((P=100,\ Q=30)\) and \((P=40,\ Q=40)\). Taking the first point as the base:

Ignoring the negative sign (which merely reflects the downward-sloping demand curve), \(|E_d| \approx \mathbf{0.56}\).

(c)(ii) Interpretation

Since \(|E_d| = 0.56 < 1\), the demand for maize is price inelastic. A \(1\%\) change in price brings about only about a \(0.56\%\) change in quantity demanded, so buyers are not very responsive to price changes. This is typical of a food staple like maize, and it explains the paradox in part (b): cutting the price shrinks the farmer's total revenue rather than raising it.

(d) Two reasons for the shift of supply from SS to \(S_1S_1\)

The curve shifts outward to the right, meaning more is supplied, so the causes are factors that make production easier or cheaper:

1. Favourable weather / good rainfall during the growing season, giving a larger harvest at every price.
2. A fall in the cost of production (for example cheaper fertiliser, seeds or fuel) or a government subsidy to maize farmers, both of which raise the quantity farmers are willing to supply. Improved technology or high-yield seed varieties would have the same effect.

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(a) Taxation is the compulsory levy imposed by government on the incomes, profits, property, goods and services of individuals and firms, without a direct quid pro quo, in order to raise revenue and achieve certain economic and social objectives.

(b) Four ways government can use taxation to improve the economy:

• To raise revenue for public expenditure: Tax proceeds finance roads, schools, hospitals, security and other development projects that improve the economy.
• To redistribute income: Progressive taxes on the rich, used to fund services and transfers for the poor, reduce inequality in the distribution of income.
• To control inflation and regulate demand: Raising taxes reduces disposable income and aggregate demand, curbing inflation; lowering taxes stimulates demand during a slump.
• To protect infant industries and correct balance of payments: High import duties discourage imports, protect local industries and improve the balance of payments; taxes can also discourage harmful goods (e.g. heavy duties on tobacco) and encourage desired activities through tax reliefs.

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(a) Public company versus public corporation:

(b) Problems of public corporations:

• Inefficiency and bureaucracy: Red tape and lack of the profit motive lead to waste and poor service.
• Political interference: Government appoints board members and dictates policy, often on political rather than economic grounds.
• Inadequate funding and heavy losses: Reliance on government subventions and frequent losses starve them of capital.
• Corruption and mismanagement: Embezzlement, over-staffing and poor management reduce productivity, and monopoly status removes the pressure to improve.

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(a) Personal income versus national income: Personal income is the total income actually received by an individual or household within a given period from all sources, including wages, rent, interest, profit and transfer payments such as pensions and gifts. National income is the total money value of all final goods and services produced by the residents of a country, plus net income from abroad, within a given period (usually one year). Thus personal income refers to one person/household, while national income is the aggregate income of the whole nation; national income excludes transfer payments (which are not payment for current production), whereas personal income includes them.

(b) Four uses of national income data:

• To measure the standard of living: Real national income per head (per-capita income) indicates the average welfare of the people and changes in it over time.
• For comparison between countries: It allows comparison of the size, structure and growth of different economies.
• To measure economic growth and performance: Changes in real national income from year to year show whether the economy is growing or declining.
• As a guide to government planning and policy: The figures reveal the contribution of each sector and guide the framing of economic policy and development plans. (They also help in the distribution of income and in determining a country's ability to pay international contributions.)

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(a) Two differences between monopoly and perfect competition:

(Any two of the above pairs are acceptable.)

(b) Four entry barriers that can prevent the emergence of competitive firms:

• Legal barriers: Patents, licences, copyrights or sole government franchise reserve production to one firm.
• Control of an essential raw material or resource: One firm owning the key input can shut out rivals.
• High capital/set-up costs and economies of scale: Large minimum investment and cost advantages of existing large firms discourage new entrants.
• Ownership of superior technology or exclusive knowledge (technical barriers), or aggressive strategies such as predatory pricing and strong brand loyalty that make entry unprofitable.