JAMB UTME - Economics - 2025

Bayanin Amsa

A free market economy (also called a capitalist or laissez-faire economy) is one in which the government does not directly control what is produced, how it is produced, or for whom it is produced. Instead, these decisions are made by individual consumers and producers interacting through markets.

The mechanism that coordinates all these independent decisions is the price mechanism. Prices act as signals: when consumers want more of a good, demand rises, which pushes the price up. The higher price signals to producers that it is profitable to allocate more resources toward that good. Conversely, when demand falls, prices drop, and producers shift resources away. Through this process of rising and falling prices, resources are automatically directed toward the goods and services that consumers value most.

A state planning committee or a government department would allocate resources in a planned (command) economy, not a free market. Trade unions represent workers' interests and negotiate wages and conditions; they do not determine resource allocation in an economy.

The price mechanism is therefore the defining feature of a free market economy - it allocates scarce resources among competing uses without the need for central direction.

Bayanin Amsa

Division of labour is the practice of breaking a production process into separate, specialised tasks and assigning each task to a different worker. An entrepreneur adopts division of labour primarily because it leads to increased output and lower cost of production.

When workers specialise in one task, they become faster and more skilled at it through repetition. This increased efficiency raises total output. At the same time, because each worker is more productive, the cost per unit of output falls. Additional benefits include reduced time lost in switching between tasks and the ability to use specialised tools and machinery suited to each step of production.

The option stating it leads to increased cost and lower output describes the exact opposite of what division of labour achieves. While division of labour does not directly aim to provide more employment opportunities (in fact, increased efficiency can sometimes reduce the number of workers needed), the entrepreneur's motivation centres on productivity gains and cost reduction, not job creation. The option about equal cost and employment opportunities does not reflect any recognised outcome of specialisation.

Bayanin Amsa

The supply curve shows the relationship between the price of a good and the quantity that producers are willing and able to supply. A standard market supply curve slopes upward from left to right, which means that as price increases, quantity supplied increases, and as price decreases, quantity supplied decreases.

This upward slope indicates that at a lower price, less is supplied. Producers are less willing to supply goods at lower prices because lower prices mean lower revenue and potentially lower profit margins. Conversely, higher prices give producers a greater incentive to supply more, as the higher revenue makes production more profitable and can justify the higher marginal costs of producing additional units.

The statement that at a lower price more is supplied contradicts the upward slope described in the question. The ability to supply two commodities at the same time and the level of taxes paid by producers are not what the slope of the supply curve indicates.

The positive relationship between price and quantity supplied is known as the law of supply.

Bayanin Amsa

In every country's banking system, there is one institution that serves as the ultimate source of credit for commercial banks and other financial institutions when they cannot obtain funds elsewhere. This institution is the central bank.

The central bank acts as the lender of last resort because it provides emergency loans to commercial banks that are experiencing temporary liquidity shortages. Without this function, a bank facing a sudden surge in withdrawals could collapse, potentially triggering a wider financial crisis. By standing ready to lend, the central bank maintains stability and public confidence in the banking system.

A commercial bank is a profit-making institution that accepts deposits and grants loans to individuals and businesses. An industrial bank (also called a development bank) provides medium- to long-term finance for industrial projects. A mortgage bank specialises in providing loans secured against property. None of these institutions has the authority or the resources to serve as the banking system's backstop lender.

Only the central bank, which controls the money supply and supervises the entire banking sector, has both the mandate and the capacity to fulfil this role.

Bayanin Amsa

In economics, land refers to all natural resources - the soil, minerals, water bodies, forests, climate, and everything provided by nature. On its own, land is passive; it cannot produce goods or services without intervention. Land as a factor of production is made useful through the application of human effort, which in economics is called labour.

Labour is the human physical and mental effort applied to natural resources to transform them into useful goods and services. Without human effort, fertile land would remain uncultivated, mineral deposits would stay underground, and rivers would not be harnessed for irrigation or power. It is the combination of land and labour that initiates the production process.

While fertilizer and machines can enhance the productivity of land, they are specific tools or inputs rather than the fundamental factor that makes land useful. Fertilizer is a material input, and machines represent capital (another factor of production), not the basic force that activates land. Acts of nature create land itself but do not make it productive in the economic sense - that requires deliberate human activity.

Bayanin Amsa

Direct taxes are taxes levied directly on the income or wealth of individuals and organizations. Examples include personal income tax, company income tax, capital gains tax, and property tax. While direct taxes have several advantages (such as being equitable and certain), they also have notable disadvantages.

One key disadvantage is that direct taxes can be evaded. Tax evasion occurs when taxpayers deliberately underreport their income, overstate their deductions, hide assets, or fail to file tax returns in order to reduce or eliminate their tax liability. This is possible because direct taxes rely on taxpayers' honest declaration of their earnings, and enforcement agencies cannot always verify every individual's true income.

Self-employed individuals and business owners, in particular, may find it easier to evade direct taxes by keeping transactions off the books or operating in the informal economy.

The other options do not describe disadvantages of direct taxes:

• Being progressive (where higher earners pay a larger percentage) is generally considered an advantage, as it promotes equity.
• "Not being rigid" is not a recognized disadvantage of direct taxes.
• Allocating scarce resources is a function of the price mechanism, not a characteristic of direct taxes.

Bayanin Amsa

This question describes a condition from consumer equilibrium theory. When the last naira spent on each commodity yields equal marginal utility, the consumer has achieved the optimal allocation of a limited budget. This state is known as utility maximisation.

The principle is formally stated as the equi-marginal principle (or the law of equi-marginal utility):

\[\frac{MU_A}{P_A} = \frac{MU_B}{P_B} = \frac{MU_C}{P_C} = \cdots\]

where \(MU\) is the marginal utility derived from a good and \(P\) is its price. When this condition holds, the consumer cannot increase total satisfaction by reallocating spending from one good to another, meaning total utility is at its maximum given the budget constraint.

Maximising costs or cutting costs are objectives that apply to producers, not to consumer choice theory. Increasing profits is similarly a producer's goal. The concept described in the question is purely about a consumer arranging purchases to get the greatest possible satisfaction from a fixed income.

Bayanin Amsa

OPEC stands for the Organization of the Petroleum Exporting Countries. It is an intergovernmental organisation founded in 1960 by five oil-producing nations (Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela). Its primary purpose is to coordinate and unify petroleum policies among member countries to ensure stable oil markets and a steady income for oil-producing nations.

The key word in the acronym is Petroleum, not "Petrol." Petroleum refers to crude oil and its derivatives in the broadest sense, encompassing all hydrocarbon resources extracted from the ground. "Petrol" is a narrower term referring specifically to refined motor fuel (gasoline), which does not capture the full scope of what OPEC member countries export.

The other options use incorrect expansions: "Oil and Petroleum Exporting Countries" begins with "Oil" rather than "Organization," and "Organic Petroleum Exporting Countries" substitutes a scientifically meaningless qualifier. Neither matches the established name of the organisation.

Nigeria joined OPEC in 1971 and is one of the key African member states of the organisation.

Bayanin Amsa

Token money is any form of money whose face value (the value stamped on it) is greater than the intrinsic value of the material from which it is made. For example, a coin stamped with a value of 100 naira may contain metal worth only a few naira. The difference between the face value and the material value is known as seigniorage, which represents profit to the issuing authority.

Almost all modern coins and banknotes are token money. A paper note may cost very little to print, yet it carries a face value of hundreds or thousands of currency units. The public accepts it not because of the paper's worth, but because the government declares it legal tender and guarantees its value.

The other options describe different concepts:

• Currency and coins in circulation describes money supply broadly, not the defining feature of token money.
• Coins and notes made of poor quality materials focuses on material quality rather than the relationship between face value and intrinsic value.
• Money in the vault of commercial banks refers to bank reserves, not a type of money classification.

The defining characteristic of token money is the gap between its face value and its material content.

Bayanin Amsa

The Nigerian Industrial Development Bank (NIDB) was established to promote industrial development in Nigeria. Its primary objective was to provide medium- and long-term loans specifically to manufacturers and industrial enterprises. By financing manufacturing ventures, the NIDB aimed to accelerate industrialization, reduce Nigeria's dependence on imported manufactured goods, and create employment in the industrial sector.

The NIDB should not be confused with other specialised financial institutions in Nigeria:

• Loans to farmers were the domain of the Nigerian Agricultural and Co-operative Bank (NACB), later reorganised as the Bank of Agriculture (BOA).
• Estate agents and real estate development were served by the Federal Mortgage Bank of Nigeria (FMBN).
• Transporters did not have a dedicated development bank; transport businesses accessed general commercial lending.

The correct answer is manufacturers, because the NIDB was created as a development finance institution focused on the industrial and manufacturing sector of the Nigerian economy.

Bayanin Amsa

Geographical distribution of population refers to how people are spread across different areas of a country or region. Several factors influence where people choose to settle, and among the options given, climatic conditions is the one that directly affects geographical distribution.

Areas with favourable climates (moderate temperatures, adequate rainfall, fertile soil) tend to attract denser settlements because they support agriculture, comfortable living, and economic activity. In contrast, regions with extreme climates (deserts, very cold areas, dense tropical forests) tend to be sparsely populated because they are less hospitable for farming and habitation.

Encouragement of early marriages in rural areas affects the rate of population growth (birth rate), not the spatial distribution of people across regions. High birth rate and high death rate are components of population change (natural increase or decrease), but they do not explain why people are concentrated in some areas and sparse in others. These factors influence the size of a population, not its geographical spread.

Climate, along with other geographical factors like terrain, water availability, and natural resources, is a primary determinant of where people live within a country.

Bayanin Amsa

Small firms (also called small-scale enterprises) play an important role in the economic development of a country. One of their key advantages is that they render personalised services to consumers. Because small firms deal with a smaller customer base, they can pay individual attention to each customer's needs, build personal relationships, offer customised products, and respond quickly to specific requests. This personal touch is something large-scale enterprises often cannot provide.

Other contributions of small firms to development include:

• Creating employment, especially in rural and semi-urban areas.
• Serving as training grounds for entrepreneurs and workers.
• Filling market niches that are too small for large firms to serve profitably.
• Promoting local resource utilisation and reducing regional inequality.

The other options describe disadvantages or inaccurate statements: producing goods only for the elite limits their developmental impact; not providing after-sales services is a weakness, not a strength; and having high prices would reduce their accessibility and contribution to welfare. None of these would justify claiming that small firms are important for development.

Bayanin Amsa

A consumers' co-operative society is a type of business organisation formed by a group of individuals who pool their resources together to buy goods in bulk and distribute them among themselves at fair prices. The defining feature of any co-operative society is that it is owned and controlled by its members, who each have an equal vote regardless of the size of their financial contribution.

Members join by purchasing shares in the society, and the profits (called surplus or dividends) are distributed among them in proportion to their patronage, not their shareholding. The management committee is elected by the members to run the day-to-day operations, but the committee does not own the society - it acts on behalf of the membership. Debenture holders are creditors who lend money to organisations and earn interest; they have no ownership stake. The government plays no role in owning a co-operative society, although it may register and regulate co-operatives through legislation.

The correct answer is that a consumers' co-operative society is owned by the members of the society. This is the foundational principle of all co-operative organisations worldwide, enshrined in the Rochdale Principles that guide co-operative practice.

Bayanin Amsa

Infant mortality refers to the death of children under the age of one year. Since it measures deaths, it is a component of the death rate (also called the mortality rate) of a country.

The death rate is defined as the number of deaths per thousand of the population per year. Infant mortality is a subset of overall mortality and is one of the most closely watched indicators within it, as it reflects the quality of healthcare, nutrition, and sanitation in a country.

Net migration refers to the difference between the number of people entering a country (immigrants) and those leaving (emigrants), which has nothing to do with infant deaths. The fertility rate measures the average number of children born per woman, which relates to births, not deaths. The immigration rate measures only the inflow of people into a country from abroad.

Population growth is determined by the formula: Population Growth = (Birth Rate - Death Rate) + Net Migration. Infant mortality feeds into the death rate component of this equation.

Bayanin Amsa

The income approach to calculating Gross National Product (GNP) includes all income earned by the factors of production, i.e.,
rent, wages, interest, and profit. Direct taxes paid by persons and companies are not included in the calculation of GNP. Therefore,
the correct answer is 'direct taxes paid by persons and companies'.

Bayanin Amsa

A balanced budget is one in which the government's expected (planned) total revenue is equal to its expected expenditure. In this scenario, the government plans to spend exactly as much as it expects to collect, resulting in neither a surplus nor a deficit.

If expected revenue is less than total expenditure, the budget is in deficit. If expected revenue is greater than total expenditure, the budget is in surplus. The option stating "greater than expected expenditure" is essentially the same as a surplus, not a balanced position.

The word "expected" is important here. A budget is a plan or projection for a future fiscal period. At the time the budget is drawn up, both revenue and expenditure are estimates. A balanced budget means these two estimates are set equal to each other. Actual outcomes may differ, but the budget itself is balanced when the planned figures match.

Bayanin Amsa

The fundamental economic problem is scarcity - human wants are unlimited, but the resources available to satisfy those wants are limited. Economic problems arise mainly because of these limitations in the availability of resources.

Because resources (land, labour, capital, and entrepreneurship) are scarce relative to the unlimited desires of society, choices must be made about how to allocate them. This gives rise to the three basic economic questions: what to produce, how to produce, and for whom to produce. Every choice involves an opportunity cost - the next best alternative forgone.

While lack of foresight, inaccurate data, and wastage of resources are real problems that can worsen economic outcomes, they are not the primary cause of economic problems. Even with perfect foresight, accurate statistics, and zero waste, economic problems would still exist because resources remain limited relative to wants. Scarcity is the root cause from which all other economic problems stem.

For examinations, always connect the concept of scarcity to the need for choice and opportunity cost - these three ideas form the foundation of economics.

Bayanin Amsa

Before the discovery and commercial exploitation of petroleum in the late 1950s and 1960s, agriculture was Nigeria's greatest foreign exchange earner. The agricultural sector dominated the Nigerian economy and was the backbone of export revenue.

Nigeria's major agricultural exports during this period included:

• Cocoa - primarily from the Western Region (now southwestern Nigeria)
• Groundnuts (peanuts) - from the Northern Region
• Palm oil and palm kernels - from the Eastern Region
• Rubber - from the Mid-Western Region
• Cotton - from the Northern Region

These cash crops were exported in large quantities to Europe and other international markets, generating the bulk of Nigeria's foreign exchange. Each region of the country had marketing boards that coordinated the purchase and export of these commodities.

The other sectors were relatively minor foreign exchange earners: handicrafts were produced largely for local consumption, mining (of tin and columbite) contributed some export revenue but far less than agriculture, and manufacturing was in its infancy and largely import-dependent rather than export-oriented.

Bayanin Amsa

Tax incidence refers to who ultimately bears the burden of a tax, which depends on the relative price elasticities of demand and supply. When a tax is imposed on a product, the party with the less elastic (more inelastic) response bears a larger share of the tax.

When the buyer bears more of the tax than the seller, it means consumers do not significantly reduce their purchases when the price rises. This describes a commodity with fairly inelastic demand. Because consumers need or strongly prefer the product, they continue buying it even at the higher post-tax price, so sellers can pass most of the tax on to buyers through higher prices.

If demand were elastic, consumers would sharply reduce purchases in response to a price increase, forcing sellers to absorb most of the tax to maintain sales. With perfectly elastic demand, consumers would bear none of the tax at all, as any price increase would drive quantity demanded to zero. Perfectly inelastic demand would mean the buyer bears all of the tax with no reduction in quantity purchased whatsoever. The question states that more (not all) of the tax falls on the buyer, which corresponds to fairly inelastic demand rather than perfectly inelastic demand.

Bayanin Amsa

Thomas Malthus, in his 1798 Essay on the Principle of Population, argued that population tends to grow faster than food supply. He identified two types of checks that keep population in balance with available resources:

• Positive checks - factors that increase the death rate, such as famine, disease, war, and epidemics. These are involuntary and painful ways by which population is reduced.
• Preventive checks - voluntary actions that reduce the birth rate, primarily moral restraint, which Malthus defined as delaying marriage and practising abstinence until one could afford to support a family.

Malthus argued that if people adopted moral restraint (the preventive check), population growth would slow voluntarily, and the painful positive checks of famine, disease, and death would be avoided. The preventive check prevents the positive check from operating.

Abolishing marriage is an extreme and impractical suggestion that Malthus never advocated. Reducing the death rate or building more hospitals would counteract positive checks after they occur rather than prevent them - and would actually worsen the population-food imbalance in Malthus's framework by allowing population to grow further.

Bayanin Amsa

Net migration measures the overall effect of migration on a country's population. It is calculated as the difference between the number of immigrants (people moving into the country) and the number of emigrants (people leaving the country) over a given period.

The formula is:

\[ \text{Net Migration} = \text{Number of Immigrants} - \text{Number of Emigrants} \]

If the result is positive, more people entered the country than left, and the country experienced net immigration. If negative, more people left than arrived, indicating net emigration.

The other options do not define net migration. Per capita income and population are measures of economic output and population size respectively. Internal and external migration are categories of migration based on whether movement occurs within or across national borders, but their difference does not define net migration. Population and census are general demographic concepts unrelated to the migration calculation.

When revising population topics, remember that net migration, along with the birth rate and death rate, determines the overall change in a country's population size.

Bayanin Amsa

When commodity X and commodity Y are supplied jointly (produced together as a result of the same production process), an increase in demand for X will increase the supply of Y.

Joint supply means that producing one commodity automatically produces the other. Classic examples include beef and leather (both come from cattle) or petrol and kerosene (both come from refining crude oil). If demand for X rises, producers respond by increasing production of X. Because X and Y are produced together, any increase in the production of X inevitably produces more Y as well. The supply of Y therefore increases as a by-product.

The other statements are incorrect:

• "An increase in demand for Y will raise the price of X" - In fact, increased production of Y (to meet demand) brings more X onto the market as well, which tends to lower the price of X (increased supply of X pushes its price down), not raise it.
• "An increase in demand for X will cause less of Y to be produced" - The opposite is true. More X means more Y, not less, because they are produced together.
• "An increase in demand for X will leave the supply of Y unchanged" - This is also incorrect. The supply of Y will increase because producing more X necessarily produces more Y.

Bayanin Amsa

The United Nations Conference on Trade and Development (UNCTAD) was established in 1964 as a permanent intergovernmental body within the United Nations system. Its primary mandate is to promote international trade, particularly the trade interests of developing countries, and to negotiate for better terms of trade in the world economy.

UNCTAD addresses issues such as:

• Unfair trade practices that disadvantage developing nations
• Commodity price stabilization
• Preferential tariff treatment for exports from developing countries
• Technology transfer to developing nations
• Reducing trade barriers that hinder development

UNCTAD is not concerned with religious affairs (which fall under other organizations), educational needs of developed countries (which are handled domestically or by UNESCO), or political conflicts in the UN Security Council (which is a separate UN organ dealing with peace and security). Its focus is squarely on trade and development issues aimed at creating a more equitable global trading system.

Bayanin Amsa

Economic integration refers to arrangements between countries to reduce or eliminate trade barriers among themselves. The different levels of integration, from least to most integrated, are:

1. Free trade area - member nations remove tariffs and quotas on trade among themselves, but each member retains the right to set its own external tariff on imports from non-member countries.
2. Customs union - like a free trade area, but members also adopt a common external tariff against non-members, so no individual member can set its own duty.
3. Common market - a customs union plus the free movement of factors of production (labour and capital) between member states.
4. Economic community/union - a common market with harmonised economic policies (monetary, fiscal, etc.).

In a free trade area, each member nation is free to impose its own duties against non-members because there is no requirement for a common external tariff. This flexibility is what distinguishes a free trade area from higher forms of integration. Once countries move to a customs union or beyond, they must agree on a uniform tariff schedule for non-member imports.

Bayanin Amsa

A sole proprietorship is a business owned and managed by a single individual. One of its key advantages is that it can be managed without conflicts. Because there is only one owner, all decisions - from day-to-day operations to long-term strategy - rest with that single person. There are no partners or shareholders to disagree with, no board meetings to navigate, and no conflicting visions for the business. This makes decision-making quick and straightforward.

The other options do not describe advantages of sole proprietorship:

• Making an increase in the volume of business possible is actually a limitation of sole proprietorship, since a single owner typically has limited capital and capacity for expansion.
• Raising money from the public is a feature of public limited companies that issue shares on the stock exchange, not sole proprietorships.
• Having no limit to the number of people who may bring in capital describes a public limited company or cooperative, not a sole proprietorship where the owner is the sole source of capital (aside from borrowing).

Bayanin Amsa

Price discrimination is the practice by which a seller charges different prices to different groups of buyers for the same good or service, where the price differences are not justified by differences in cost of production or delivery.

For price discrimination to be possible, certain conditions must hold:

• The seller must have some degree of market power (ability to influence price, typically a monopolist or firm with significant market share).
• The seller must be able to identify and separate different groups of buyers (by age, location, time of purchase, income level, etc.).
• There must be no possibility of resale (arbitrage) between the groups - buyers who get the lower price cannot resell to those who would pay the higher price.

Examples include cinemas charging different ticket prices for students, adults, and seniors; airlines charging different fares for the same seat depending on when the ticket is purchased; and electricity companies charging different rates for domestic and industrial users.

This concept is distinct from monopolistic competition (a market structure), monopoly (a single seller), and price determination (the process by which market price is established through supply and demand).

Bayanin Amsa

Commercial policy (also called trade policy) refers to the set of government measures used to regulate international trade. These measures include tariffs, quotas, embargoes, and subsidies. One of the strongest arguments for using commercial policy is the need to reduce domestic unemployment.

By imposing tariffs or quotas on imported goods, a government makes foreign products more expensive or restricts their quantity, thereby protecting domestic industries from foreign competition. When local industries are shielded, they can maintain or expand production, which preserves and creates jobs for domestic workers. This is sometimes called the infant industry argument or the employment protection argument for trade restrictions.

The other options do not represent valid arguments for commercial policy:

• Making imported goods affordable would require removing trade barriers, which is the opposite of commercial policy restrictions.
• Encouraging importation of non-essential goods contradicts the purpose of trade policy, which typically aims to restrict such imports to conserve foreign exchange.
• No trade policy can make a country enjoy absolute advantage in the production of all goods - absolute advantage depends on a country's resource endowments and productivity, not on trade restrictions.

Bayanin Amsa

This is an "except" question, so the correct answer is the option that is not a reason for the failure of agricultural policies in West Africa.

The creation of agro-service stations is a positive, supportive measure designed to improve agricultural performance. Agro-service stations provide farmers with inputs (seeds, fertilisers), technical advice, equipment hire, and extension services. This is a constructive policy action that promotes agricultural development rather than causing policy failure.

The other three options are genuine reasons why agricultural policies have failed in West Africa:

• Vague policy statements lead to unclear objectives, making implementation difficult and outcomes hard to measure.
• Negation of policies occurs when successive governments abandon or reverse the agricultural policies of their predecessors, creating inconsistency and wasted investment.
• Provision of obsolete implements means farmers receive outdated or inefficient tools that do not improve productivity, undermining the very goals of the policy.

Since the creation of agro-service stations is a helpful intervention, it is the exception and does not belong among reasons for policy failure.

Bayanin Amsa

Joint supply occurs when two or more goods are produced simultaneously from a single raw material or production process. A classic example is crude oil refining: when crude oil is refined, it yields multiple products including petrol, kerosene, diesel, grease, bitumen, and other derivatives. These products are produced together because they are all fractions obtained from the same distillation process.

When the price of crude oil increases, the cost of producing all its derivatives rises, which leads to an increase in the prices of kerosene, grease, and every other product obtained from crude oil. The key indicator of joint supply is that these goods share the same source and their production is inseparable - you cannot refine crude oil to produce only kerosene without also producing grease and other fractions.

This is different from:

• Competitive supply - where goods compete for the same resources (e.g., using land for maize versus cassava).
• Composite supply - where a good can be obtained from multiple alternative sources.
• Market supply - which simply refers to the total quantity of a good offered for sale at various prices.

Bayanin Amsa

A shift of the demand curve to the right means that at every given price, consumers are willing and able to buy a larger quantity of the good than before. This is different from a movement along the demand curve, which is caused by a change in the price of the good itself.

An increase in consumers' income shifts the demand curve for a normal good (such as cocoa) to the right. When consumers earn more, they have greater purchasing power and are willing to buy more cocoa at each price level. This is a change in a non-price determinant of demand, which causes the entire curve to shift.

A rise in the price of cocoa would cause a movement along the existing demand curve (a decrease in quantity demanded), not a shift of the curve. A fall in the quantity demanded of cocoa similarly describes a movement along the curve. A tax on cocoa producers affects the supply side of the market, shifting the supply curve rather than the demand curve.

Other factors that shift the demand curve to the right include an increase in population, a rise in the price of substitute goods, a fall in the price of complementary goods, and a change in consumer tastes in favour of the product.

Bayanin Amsa

Thomas Robert Malthus, in his 1798 work An Essay on the Principle of Population, argued that population increases in geometric progression (i.e., it multiplies: 2, 4, 8, 16, 32, ...) while food production increases only in arithmetic progression (i.e., it adds a constant amount: 1, 2, 3, 4, 5, ...).

Because a geometric series grows much faster than an arithmetic series, Malthus concluded that population would inevitably outstrip the food supply unless checked by what he called positive checks (famine, disease, war) or preventive checks (moral restraint such as delayed marriage).

The option stating the reverse, that population grows arithmetically while food grows geometrically, directly contradicts Malthus's theory. The option suggesting the two will be at par in the future is also incorrect because Malthus's central point was that they would diverge, not converge. The option about nations needing manpower to cultivate land describes a general statement about agricultural labour, not the specific population-food growth relationship Malthus proposed.

Bayanin Amsa

The United Nations Conference on Trade and Development (UNCTAD) is the institution specifically concerned with expanding developing countries' commodity trade. Established in 1964, UNCTAD's core mission is to help developing nations integrate more effectively into the global economy, with particular attention to their commodity exports.

UNCTAD works to:

• Stabilize commodity prices that developing countries depend on for export revenue
• Negotiate preferential trade agreements that give developing country exports better access to developed-country markets
• Address the deterioration in terms of trade faced by commodity-exporting developing nations
• Provide technical assistance to help developing countries diversify their trade

While the other organizations play important roles in development, their primary mandates differ:

• The World Trade Organization (WTO) sets and enforces global trade rules for all member countries, not specifically for developing nations' commodity trade.
• The Economic Commission for Africa (ECA) is a regional UN body focused broadly on African economic and social development.
• The African Development Bank (AfDB) provides financing for development projects in Africa, rather than specifically expanding commodity trade.

Bayanin Amsa

In economics, the satisfaction or pleasure a consumer derives from using or consuming a good or service is called utility. Utility is a core concept in consumer theory and underpins the analysis of demand, choice, and resource allocation.

Utility can be measured in two ways: cardinal utility assigns numerical values to satisfaction (utils), while ordinal utility simply ranks preferences without attaching specific numbers. In both frameworks, the term for the satisfaction itself is utility.

Elasticity refers to the responsiveness of one economic variable (such as quantity demanded) to a change in another variable (such as price). Wealth refers to the stock of valuable assets owned by a person or nation, not the satisfaction from consuming a single commodity. Demand describes the quantity of a good consumers are willing and able to buy at various prices, not the satisfaction obtained from consuming it.

Bayanin Amsa

In developing (poorer) countries, the economy is typically dominated by the primary sector, of which agriculture is by far the largest component. A large percentage of the labour force is engaged in agriculture because:

• Agriculture is the most accessible economic activity, requiring relatively low capital investment and basic skills.
• Poorer countries often lack the infrastructure, technology, and capital needed for large-scale manufacturing or mining.
• Subsistence farming is the main source of livelihood for rural populations, which form the majority in developing nations.
• The industrial and service sectors are not sufficiently developed to absorb the available labour force.

As countries develop economically, the labour force gradually shifts from the primary sector (agriculture) to the secondary sector (manufacturing and industry) and then to the tertiary sector (services). This pattern of structural change is described by the Clark-Fisher model of economic development.

Manufacturing, trading, and mining are sectors that expand as a country industrialises, but in the poorest countries, it is agriculture that employs the largest share of workers.

Bayanin Amsa

A stock exchange is a formal, regulated marketplace where securities - such as shares (stocks), bonds, debentures, and government securities - are bought and sold. It provides a platform for companies to raise capital by issuing shares to the public and for investors to trade those shares among themselves.

The correct answer is that a stock exchange deals with the purchase and sale of securities. Key functions of a stock exchange include:

• Providing a secondary market where existing securities can be traded, giving investors liquidity.
• Facilitating price discovery through the forces of supply and demand.
• Protecting investors through regulations, listing requirements, and transparency rules.
• Mobilising savings and channelling them into productive investment.

A stock exchange does not deal with the exchange of physical commodities - that is the function of a commodity exchange or commodity market. The other two options are nonsensical distractors that do not describe any recognised financial market.

Examples of stock exchanges include the Nigerian Stock Exchange (now Nigerian Exchange Group), the London Stock Exchange, and the New York Stock Exchange.

Bayanin Amsa

The equilibrium price is the price at which the quantity demanded by consumers equals the quantity supplied by producers. At this price, there is no surplus (excess supply) and no shortage (excess demand), so the market "clears" - every unit offered for sale finds a buyer.

For this reason, another term for equilibrium price is the market clearing price.

Demand price refers to the maximum price a consumer is willing to pay for a given quantity, which is not the same as the equilibrium price unless it happens to coincide with the supply price. "Satisfactory price" is not a standard economic term. A price floor is a government-imposed minimum price set above the equilibrium to protect producers (as in minimum wage legislation or agricultural price supports), which is the opposite of the market-determined equilibrium.

In examinations, if you see "equilibrium price," "market clearing price," or "market price" used interchangeably, they all refer to the point where the demand and supply curves intersect.

Bayanin Amsa

In the long run, all factors of production are variable, and a firm can change its scale of operation (plant size, workforce, equipment). A firm's average cost decreases in the long run because of increasing returns to scale, which is the source of economies of scale.

Increasing returns to scale means that when a firm increases all its inputs by a certain proportion, its output increases by a greater proportion. For example, if a firm doubles all its inputs and output more than doubles, the cost per unit of output falls. This happens because of advantages such as:

• Technical economies - larger machines and production lines operate more efficiently.
• Managerial economies - specialist managers can be employed for different functions.
• Purchasing economies - bulk buying of raw materials at discounted prices.
• Financial economies - larger firms can borrow at lower interest rates.

Decreasing marginal returns and diminishing average returns are short-run concepts related to adding more of one variable factor while others are fixed; they cause costs to rise, not fall. Decreasing average fixed cost is a short-run phenomenon (spreading fixed costs over more output) and does not explain the long-run decline in average cost, which requires a change in the scale of all inputs.

Bayanin Amsa

The location of an industry is determined by several factors that influence where it is most efficient and profitable to set up production. The classical factors include:

• Availability of labour - industries locate where there is an adequate supply of skilled or unskilled workers as required.
• Proximity to market - industries that produce bulky, perishable, or fragile finished goods tend to locate near their consumers to reduce transport costs.
• Nearness to raw materials - industries that use heavy or perishable raw materials locate near the source to minimise input transport costs (weight-losing industries).

Other recognised location factors include availability of power and water, transport infrastructure, government policy, and climate.

The minimum wages rate is not a classical factor determining industrial location. Minimum wage is a government-imposed floor on worker pay and applies uniformly across all locations within a country. While the general cost of labour may influence location decisions, the statutory minimum wage rate does not vary by location in a way that would determine where an industry is sited. It is a labour regulation, not a locational factor.

Bayanin Amsa

Table I above illustrates the law of diminishing marginal utility. The law of diminishing marginal utility states that as a person
increases consumption of a product while keeping consumption of other products constant, there is a decline in the marginal
utility that person derives from consuming each additional unit of that product. In the table, as the units of quantity consumed increase, the marginal utility decreases.

Bayanin Amsa

Inflation is a sustained rise in the general price level of goods and services over time. The most direct and observable consequence of inflation is that the purchasing power of money falls - meaning the same amount of money buys a lower quantity of goods than it did before.

If a loaf of bread cost 500 naira last year and now costs 700 naira, a person with 500 naira can no longer afford a full loaf. The money has not physically changed, but its value in terms of what it can purchase has declined. This is the defining indicator that inflation is occurring in an economy.

The other options do not correctly indicate inflation:

• A decrease in the demand for goods and services would tend to push prices down, not up.
• During inflation, people prefer to borrow rather than lend, because they can repay loans with money that is worth less in the future. Lenders lose out during inflation.
• Too many goods in circulation would create a surplus, which would drive prices down, not up. Inflation is associated with too much money chasing too few goods, not an excess of goods.