JAMB UTME - Economics - 2023

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Real cost is the cost of producing a good or service, including the cost of all resources used and the cost of not employing those resources in alternative uses.

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Business cycle are intervals of expansion followed by recession in economic activity. It is characterized by general upswings and downturns in a span of macroeconomics variable.

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One of the major problem of West African state is the relation of West African states with the colonial masters.

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Velocity of money is the total amount of money in circulation in an economy. It is calculated as Velocity of money = GDP/Money Supply

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Public corporations are run by the government through the tax paid by the people. They are established by an act of parliament or decree and it is controlled by the board of directors, appointed by the government.

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An example of expansionary monetary policy by the Central Bank of Nigeria is "buying Treasury securities from commercial banks." Expansionary monetary policy is a type of policy implemented by the central bank to stimulate economic growth and increase the supply of money in the economy. This policy is typically used during times of economic downturn or recession to encourage spending and investment. When the Central Bank of Nigeria buys Treasury securities from commercial banks, it injects money into the economy. This increases the amount of money available in the banking system, making it easier for banks to lend to businesses and individuals. By increasing the money supply, the central bank aims to lower interest rates, which in turn encourages borrowing and spending. Lower interest rates mean that businesses and individuals can access credit more easily, leading to increased investment, consumer spending, and economic growth. This expansionary policy can help support economic activity, boost employment, and stimulate overall economic recovery.

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Cost push inflation occurs when overall prices increase(inflation) due to increases in the cost of wages and raw materials. It can also occur when higher costs of production decrease the aggregate supply in the economy.

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The theory of absolute advantage was propounded by Adam Smith while the theory of comparative advantage was propounded by David Ricardo.

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A tariff is a tax that is imposed on imported goods. It is a financial charge that a government puts on goods that are being brought into the country. The purpose of a tariff is to protect domestic industries and businesses from competition from imported goods. By placing a tax on imported goods, it becomes more expensive for consumers to buy those goods, making them less appealing compared to domestic alternatives. This gives domestic industries a competitive advantage and helps support local businesses and jobs. So, the correct answer is imported goods.

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Macroeconomics focuses on the units of an economy in an aggregative manner, meaning it looks at the economy as a whole rather than focusing on individual units. This helps us understand how different parts of the economy interact and influence each other.
The correct option is **household, firms, government, corporate sector, and external sector**. Macroeconomics analyzes the behavior and interactions of these units to understand the overall performance of the economy.
1. **Households**: These are the individual consumers who make up the economy. They play a vital role in determining the consumption and saving patterns that influence economic activities.
2. **Firms**: Firms are the businesses that produce goods and services in the economy. Macroeconomics looks at their investment decisions, production levels, and employment to understand the overall economic growth and productivity.
3. **Government**: The government plays a significant role in macroeconomics. It collects taxes, provides public goods and services, regulates the economy, and influences economic policies such as fiscal and monetary measures to stabilize the economy.

4. **External sector**: The external sector represents international trade and the flow of goods, services, and capital across borders. Macroeconomics considers factors like exports, imports, exchange rates, and foreign investment to understand the impact of global interactions on the economy.
By examining these units in an aggregative manner, macroeconomics helps us understand how changes in one sector affect the others and ultimately impact the overall performance of the economy.

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Economics is often described as a science because it uses scientific methods to explain observed phenomena. Just like other scientific fields, economics relies on gathering data, formulating hypotheses, and conducting experiments to test these hypotheses. However, unlike fields such as physics or chemistry, economics does not rely on laboratory experiments or controlled experiments. Instead, economists analyze real-world data to understand how individuals, businesses, and governments make choices and interact with each other. They use statistical methods to analyze this data and make predictions about how changes in various factors will affect economic outcomes. While it is difficult to accurately predict the behavior of individual human beings, economics aims to make accurate predictions on aggregate behavior, or how groups of people will respond to changes in factors such as prices, taxes, or policies. These predictions are based on the analysis of historical data and the use of economic models, which simplify complex economic interactions. In summary, economics is considered a science because it employs scientific methods to explain observed phenomena, although it does not rely on laboratory experiments or controlled experiments. It uses data analysis, hypothesis testing, and economic models to understand and predict how individuals and groups make economic decisions and interact with each other.

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The diagram above represent a monopolist diagram.

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When there is an increase in money income but the prices of goods and services remain the same, it will result in an outward shift in the budget line. To understand this, let's imagine a simple scenario where a person has a fixed amount of money to spend on different goods and services. This fixed amount of money represents their income. Now, if their income increases but the prices of goods and services they want to buy stay the same, they will have more money to spend. This means they can afford to buy more of each item. As a result, the budget line, which shows the different combinations of goods and services that can be bought with a given income, will shift outward. This indicates that they can now afford to buy a greater quantity of goods and services than before. Therefore, the correct answer is an "outward shift in the budget line" when there is an increase in money income with constant prices.

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The highest body in the ECOWAS organogram is the Authority of Head of State and Government. This body consists of the presidents and heads of government of the member states in the Economic Community of West African States (ECOWAS).
The Authority of Head of State and Government is responsible for making major decisions and policies for the entire ECOWAS community. They meet regularly to discuss and address regional issues, such as political stability, economic cooperation, and security.
This body holds the highest level of political power in ECOWAS and has the authority to make decisions that affect the entire organization. It plays a crucial role in promoting regional integration and cooperation among member states.
To sum up, the Authority of Head of State and Government is the most important body in the ECOWAS organogram as it consists of the leaders of the member states and is responsible for making key decisions and policies for the organization.

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The correct term for the number of people who are qualified to work and who offer themselves for employment is the working population.
The working population refers to the subset of the total population that is actively engaged or seeking employment. It includes individuals who are qualified, available, and willing to work. This encompasses both employed individuals and those who are actively looking for work, such as job seekers.
The working population is an important measure for understanding the labor market. It helps policymakers, businesses, and economists in assessing the job market's health and determining factors such as employment rates, labor force participation, and unemployment rates.
Options like "mobility of labor" and "migrant labor" focus on the movement of workers between different locations, which is a related concept but not the same as the total number of qualified individuals available for employment. "Labor turnover" refers to the rate at which workers leave and join a particular company or industry, which is also not synonymous with the working population as a whole.
Therefore, the working population is the term that correctly describes the number of qualified individuals who are available for employment.

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The diagram above represents the production possibility curve.
The production possibility curve shows the different combinations of goods and services that can be produced given the available resources and technology.
On the curve, each point represents a specific combination of goods and services that can be produced. Points on the curve are considered efficient because all available resources are fully utilized. Points inside the curve represent inefficient production because resources are not fully utilized. Points outside the curve represent combinations that are currently unattainable given the available resources and technology.
In summary, the production possibility curve helps us understand the trade-offs and limitations in production based on available resources and technology. It is a visual representation of the production possibilities in an economy.

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Investment multiplier (K) is a function of two factors; The MPS and MPC. If MPC is high, K will also be high but if MPC is low, K will also be low. on the other hand, If MPS is high, K will be low and if MPS is low, K will be high ( since there is an inverse relationship between MPS and K).

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The type of unemployment that occurs when an individual cannot find a job as a result of obsolete skills is known as Structural unemployment.

Structural unemployment happens when there is a mismatch between the skills that job seekers possess and the skills required for available jobs in the market. In this case, individuals may no longer be qualified for the jobs that are available due to changes in technology, market conditions, or shifts in the economy.

For example, let's say there is a rapid advancement in technology that makes certain job skills obsolete. Workers who had those skills may struggle to find employment because companies are now looking for individuals with more up-to-date skills.

This type of unemployment is different from cyclical unemployment, which is caused by fluctuations in the business cycle, or seasonal unemployment, which occurs due to seasonal variations in demand for certain jobs. Frictional unemployment, on the other hand, refers to the temporary unemployment that occurs when individuals are transitioning between jobs or entering the workforce for the first time.

To sum up, structural unemployment is the type of unemployment that arises when an individual cannot find a job because their skills are no longer in demand.

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Currency depreciation is a fall in the value of a currency in a floating exchange rate system. Therefore, a decrease in the price of the domestic currency in terms of a foreign currency is referred to as depreciation.

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Private goods are referred to as rivalrous and excludable by economists. Let me explain what this means in a simple and comprehensive way.
When a good is rivalrous, it means that one person's use or consumption of the good diminishes its availability for others. For example, if you eat an orange, there is now one less orange for someone else to consume. The consumption of the orange by one person reduces the availability of the orange for others.
On the other hand, when a good is excludable, it means that it is possible to prevent someone from using or consuming that good if they do not pay for it. For instance, if you go to a movie theater and buy a ticket, you are allowed entry to watch the movie. However, if you do not buy a ticket, you will be excluded from watching the movie.
Private goods possess both of these characteristics. They are rivalrous because one person's use or consumption of the good reduces its availability for others. For example, if you buy a car, only you can use it at any given time, and someone else cannot simultaneously use it. Private goods are also excludable because it is possible to prevent others from using or consuming the good if they do not pay for it. For instance, if you purchase a book, you have exclusive access to read it unless you choose to share it with someone.
In summary, private goods are referred to as rivalrous and excludable because their consumption diminishes their availability for others, and it is possible to exclude others from using or consuming them if they do not pay for them.

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To calculate the elasticity of demand, we need to compare the changes in price and quantity demanded.
First, let's calculate the percentage change in price:
% change in price = ((new price - old price) / old price) x 100
% change in price = ((6 - 8) / 8) x 100
% change in price = (-2 / 8) x 100
% change in price = -25%
Next, let's calculate the percentage change in quantity demanded:
% change in quantity demanded = ((new quantity demanded - old quantity demanded) / old quantity demanded) x 100
% change in quantity demanded = ((30 - 20) / 20) x 100
% change in quantity demanded = (10 / 20) x 100
% change in quantity demanded = 50%
Now, let's calculate the elasticity of demand:
Elasticity of demand = % change in quantity demanded / % change in price
Elasticity of demand = 50% / -25%
Elasticity of demand = -2
The elasticity of demand is -2.
Explanation:
The negative sign in the elasticity of demand (-2) indicates that the demand for carrots is price elastic. This means that a decrease in price by 1% will lead to a more than proportionate increase in quantity demanded by 2%. In simpler terms, when the price of carrots decreased by 25%, the quantity demanded increased by 50%.
Therefore, the elasticity of demand is -2, which means that the demand for carrots is price elastic.

But since price elasticity is always represented with a positive number, the answer is 2

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The economies of West African countries primarily depend on primary products.
Primary products refer to raw materials or natural resources that are extracted directly from the earth or sea. These resources typically include agricultural products such as crops, livestock, and fisheries, as well as minerals and natural resources like oil, gas, and minerals.
West African countries, like many developing nations, tend to have economies that are heavily reliant on these primary products. This reliance is due to a combination of factors such as the abundance of natural resources in the region and historical patterns of economic development.
Agriculture plays a significant role in the economies of West African countries, with a large percentage of the population engaged in farming activities. These countries export a variety of agricultural products, including cocoa, coffee, palm oil, cotton, and timber. These exports generate significant revenue and contribute to the overall economic growth of these nations.
Additionally, West Africa is rich in mineral resources such as gold, diamonds, bauxite, and iron ore. The extraction and export of these minerals also contribute to the economic development of these countries.
While some West African countries have started to diversify their economies and develop secondary and tertiary sectors, the primary sector remains a vital component of their economies. However, it is important for these countries to also focus on diversification and value addition to their primary products to reduce their vulnerability to fluctuations in global commodity prices and achieve sustainable growth.

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A multiplier is a factor of proportionality that measures how much an endogenous variable changes in response to a change in some exogenous variable such as investment, consumption, government expediture etc.

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Labour is by far the most common of the factors used in measuring productivity. One reason for this is, of course, the relatively large share of labour costs in the value of most products.

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An industry is a group of firms producing similar products and under separate administration or management.

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To calculate the equilibrium level of national income (Y), we start with the equation Y = C + I + G. In this equation, C represents consumption spending, I represents investment spending, and G represents government spending. Now, let's substitute the given values into the equation: C = 100 + 0.75Y I = 50 G = 200 Substituting these values, we get: Y = (100 + 0.75Y) + 50 + 200 To solve for Y, we need to simplify the equation: Y = 100 + 0.75Y + 50 + 200 Combining like terms, we have: Y = 350 + 0.75Y Next, we can solve for Y by isolating it on one side of the equation. To do this, we can subtract 0.75Y from both sides: Y - 0.75Y = 350 Simplifying further, we have: 0.25Y = 350 Finally, we can solve for Y by dividing both sides of the equation by 0.25: Y = 350 / 0.25 Calculating this, we find: Y = 1400 So, the equilibrium level of national income (Y) is 1400.

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Normative economics is a perspective on economics that reflects normative, or ideologically prescriptive judgments toward economic development, investment projects, statements, and scenarios. It expresses ideological judgments about what may results in economic activity if public policy changes are made.

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An increase in nominal income without an increase in prices will result in an **increased real income**. Nominal income refers to the amount of money a person earns or receives in a given period, without taking into account changes in prices. On the other hand, real income takes into consideration the effects of inflation by adjusting for changes in prices. When nominal income increases but prices remain constant, it means that the purchasing power of an individual's income has increased. In other words, they can afford to buy more goods and services with the same amount of money. This increase in purchasing power leads to an increase in real income. For example, let's say a person's nominal income is $1,000 per month, and the prices of goods and services they consume also remain constant. If their nominal income increases to $1,200 per month, without any increase in prices, they now have an additional $200 to spend on other things. This additional purchasing power translates to an increase in their real income. It is important to note that an increase in nominal income without an increase in prices does not necessarily lead to an **increased GDP** or a **decreased GNP**. GDP (Gross Domestic Product) measures the total value of goods and services produced within a country's borders, while GNP (Gross National Product) measures the total value of goods and services produced by a country's residents, including those produced abroad. The increase in real income of individuals does not automatically impact the overall production levels captured by GDP or GNP.

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A quota on imports is a restriction imposed by a government on the quantity of goods that can be imported into a country. It is typically done to protect domestic industries and promote economic growth.

Out of the given options, a government imposing a quota on imports would not be done to decrease tax revenue. In fact, the purpose of implementing import quotas is quite the opposite – to increase tax revenue by protecting domestic industries and promoting their growth.

Let's understand this further:

1. To support strategic industry: One of the main reasons governments impose import quotas is to protect and support domestic industries that are considered strategically important for the country's economy. By limiting imports, the government aims to give domestic industries an advantage by reducing competition from foreign firms.

2. To prevent dumping: Dumping refers to the practice of selling goods in another country at prices lower than their production costs or market value. This undermines domestic industries and poses a threat to their survival. By imposing import quotas, the government can control the influx of dumped products and protect domestic industries from unfair competition.

3. To decrease tax revenue: This option is incorrect because imposing import quotas does not aim to decrease tax revenue. When imports are restricted, domestic industries have less competition, which allows them to charge higher prices. As a result, the government can collect more tax revenue from these higher-priced goods, thus increasing its overall revenue.

4. Employment opportunity: Another reason governments may impose import quotas is to create employment opportunities. By limiting imports, domestic industries can expand their production and hire more workers to meet the local demand. This helps in reducing unemployment and improving the overall economic conditions of the country.

In conclusion, the correct answer is that a government would not impose a quota on imports to decrease tax revenue. Import quotas are intended to protect strategic industries, prevent dumping, and create employment opportunities, while also increasing tax revenue.

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Based on the graph, the consumer is at equilibrium at point k.

Equilibrium is when the quantity demanded by the consumer is equal to the quantity supplied by the market. At equilibrium, there is no shortage or surplus of the goods or services.

Point k on the graph represents the intersection of the demand curve (D) and the supply curve (S). At this point, the quantity demanded (Qd) and the quantity supplied (Qs) are equal.

If the consumer is at any other point on the graph, either to the left or to the right of point k, there would be either a shortage or a surplus of the goods or services. This would mean that the demand and supply are not in balance and the market is not at equilibrium.

Therefore, point k is the correct answer as it represents the position where the consumer is at equilibrium.

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Part-time workers who desire full-time employment are classified as underemployed and contribute to the unemployment statistic.
Underemployment refers to a situation where individuals are working fewer hours than they would like or in jobs that do not utilize their skills and qualifications fully. In this case, part-time workers who desire full-time employment are considered underemployed because they are not able to secure the desired amount of work hours.
These underemployed workers contribute to the unemployment statistic because they are actively seeking additional work hours to meet their employment needs. They are considered part of the labor force because they are willing and available to work more hours, but they have not been able to find full-time employment.
It is important to note that not all underemployed workers contribute to the unemployment statistic. Some may choose to work part-time for personal reasons, such as family responsibilities or pursuing education. These individuals, although underemployed, are not actively seeking additional work hours and therefore do not contribute to the unemployment statistic.
However, in the case of individuals who are part-time workers and desire full-time employment, their underemployment status reflects the inadequacy of available job opportunities. They increase the count of unemployed individuals because they are willing and actively searching for additional work.
It is worth mentioning that cyclical unemployment is a different type of unemployment. It occurs when there is a downturn in the economy, causing a decrease in overall demand for goods and services, and subsequently, a decrease in the demand for labor. Cyclical unemployment is not directly related to the part-time workers' desire for full-time employment.

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The type of economy that exists in these countries is Mixed economy.

A mixed economy is an economic system that combines elements of both market and planned economies. It includes both private and public sectors, and the government plays a significant role in regulating and defining the structure of the economy.

In the given scenario, the fact that the countries have different levels of public expenditure as a percentage of GDP indicates that the government plays a role in the economy and is involved in spending a portion of the national income.

While the exact percentage of public expenditure varies between the countries, the presence of any public expenditure suggests government intervention and regulation in the economy. This means that these countries have a mixed economy, where both public and private sectors coexist and contribute to economic activities.

The government's involvement can take various forms, such as funding public goods and services, implementing social programs, and regulating industries. The level of government intervention may vary, but the presence of public expenditure indicates that the government has an active role in shaping the economy.

Therefore, based on the information provided, it can be concluded that the countries mentioned in the table have a mixed economy.

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The monopolist can charge P2 price and still make profit as long as he covers his AVC. Any price below price P2, the monopoly will run at loss or shut down.

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A persistence rise in the prices of inputs, such as raw materials or labor, can lead to **cost push inflation**. Cost push inflation occurs when the increased costs of production for firms are passed on to consumers in the form of higher prices for goods and services. This can happen when the prices of inputs used in production rise over a sustained period. When input costs increase, businesses often have two options: absorb the increased costs and accept lower profit margins, or pass on the higher costs to consumers by raising prices. If firms choose to raise prices, it can lead to a general increase in the overall price level in the economy. Here's a simple example to help illustrate this concept: Let's say there is a town where the main industry is manufacturing shoes. The cost of leather, which is a key input in shoe production, starts to rise due to factors like high demand or scarcity. In response, shoe manufacturers have to pay more for leather, and this increases their production costs. To maintain their profit margins, the manufacturers decide to increase the prices of shoes they sell to retailers. Now, if the retailers decide to pass on the higher costs to the consumers, the prices of shoes will increase. This can create a ripple effect throughout the economy because consumers will have to spend more money on shoes, reducing their purchasing power for other goods and services. As a result, the overall price level in the economy increases, and this is what we call cost push inflation. It is important to note that cost push inflation is different from demand pull inflation. Demand pull inflation occurs when there is an increase in aggregate demand, leading to an excess of demand over supply. In contrast, cost push inflation is driven by increased production costs. Hyperinflation, on the other hand, is an extreme form of inflation characterized by an uncontrollable increase in prices. It is typically caused by factors like rapid money supply growth or loss of confidence in the currency. Stagflation refers to a situation where there is a combination of high inflation and high unemployment, typically accompanied by low economic growth. This can occur when an economy experiences a supply-side shock, such as a significant increase in the prices of key inputs. In summary, a persistence rise in the prices of inputs can lead to cost push inflation, as firms pass on the increased costs to consumers by raising prices.

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The short run can be defined as the period of time during which at least one of the firm's inputs is fixed. In other words, it is a time frame in which the firm cannot easily or quickly adjust all of its inputs. This means that some resources, such as the size of a factory or the number of employees, cannot be changed in the short run.
During the short run, firms can only adjust their production levels by varying the amount of variable inputs, such as raw materials or utilities. The fixed input, which remains constant in this period, imposes limitations on the firm's ability to increase or decrease its output. This constraint on adjusting all inputs is what distinguishes the short run from the long run, where all inputs can be varied.
It is important to note that the length of the short run can vary depending on the industry and the specific circumstances of the firm. For some businesses, the short run may be a few months, while for others it could be several years. However, what remains consistent is that during the short run, the firm is restricted in its ability to modify certain inputs, which can impact its production and overall performance.

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Q = 14, P = 4

Qd = 30 - 4p

∆q/∆p = - 4
 

Ed = ΔqΔp×pq $\frac{<br>}{}$

= - 4 x 4/14

= Ed = -1.14
since price elasticity is positive, then Ed = 1.14

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The causes of balance of payment deficit are: low level of agriculture, low level of technological development, inadequacies in export promotion strategy, political instability, poor social and economic infrastructure, servicing of huge external debts, existence of import dependent industries etc.

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The type of price elasticity of demand for a commodity whose quantity demanded remains unchanged despite changes in the price is **perfectly inelastic**. When the demand for a commodity is perfectly inelastic, it means that the quantity demanded does not respond at all to changes in price. This usually occurs when there are no close substitutes for the commodity, or when the commodity is a necessity that people cannot easily do without. To understand it in a simple way, imagine a situation where the price of a life-saving medication for a critical illness increases significantly. In such a case, even if the price increases, the quantity demanded for the medication will remain the same because the individuals who need it have no other option but to purchase it at any cost. Therefore, the demand for such a medication is perfectly inelastic, as it does not change with variations in price. In summary, when the demand for a commodity is perfectly inelastic, it means that consumers are willing to pay any price for it, and the quantity demanded does not change despite fluctuations in price.

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Financial intermediaries serve as links between surplus and deficit units in an economy. These intermediaries include banks, credit unions, and other financial institutions. When there is surplus money in the economy, individuals and businesses deposit the excess funds with financial intermediaries. These intermediaries then pool these funds together and make them available to deficit units, such as individuals or businesses in need of loans or financing. Financial intermediaries play a crucial role in the economy by efficiently allocating funds from surplus units to deficit units. They match the needs of borrowers with the resources of savers, helping to facilitate economic growth and development. Tax officers and pension offices, on the other hand, do not serve as direct links between surplus and deficit units. Tax officers collect taxes for the government, while pension offices manage pension funds for retired individuals. Although these entities may indirectly impact the allocation of funds in the economy, their primary roles are different from that of financial intermediaries. Acceptance houses are also not direct links between surplus and deficit units. Acceptance houses provide short-term financing through the purchase of bills of exchange. While they play a role in facilitating trade between businesses, their function is more specific and limited compared to the broader role of financial intermediaries. In summary, financial intermediaries such as banks and credit unions serve as the primary links between surplus and deficit units in an economy. They gather surplus funds from savers and make them available to borrowers, thereby promoting the efficient allocation of resources.

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In a two by two model of international trade, it is assumed that **both countries could gain from trade at the same time, but the volume of the gains depends on terms of trade**. This means that both countries can benefit from engaging in trade with each other. Trade allows both countries to specialize in producing and exporting the goods in which they have a comparative advantage, while importing goods that they are less efficient at producing. This leads to increased efficiency and overall economic gains for both countries. However, the volume of the gains from trade depends on the terms of trade between the two countries. The terms of trade refer to the ratio at which the countries exchange their goods. If one country has a higher bargaining power or can produce goods at a lower cost, they may negotiate more favorable terms of trade, leading to a larger volume of gains for that country. On the other hand, if the terms of trade are less favorable, the volume of gains for both countries may be smaller. In summary, while both countries can benefit from trade, the extent of the gains will vary depending on the terms of trade negotiated between them.