JAMB UTME - Economics - 2019

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External economies arise essentially from the localization of industry. External economies occur when an industry or group of firms in a specific geographical area experience benefits beyond what they could achieve individually. This can include access to specialized suppliers, a skilled labor force, and a larger market for their products or services. Localization of industry refers to the concentration of firms in a specific area. This can create a cluster of related industries and suppliers, allowing for easier collaboration, lower transportation costs, and increased efficiency. Government policies, such as subsidies or tax incentives, may encourage the localization of industries, but they do not create external economies themselves. Similarly, a firm's individual policies and the free transferability of shares do not create external economies as they are focused on the internal operations of the firm. Overall, external economies are a result of the benefits that arise from firms operating in close proximity to each other in a specific geographic location, which can lead to increased efficiency and productivity for all firms involved.

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To find the arithmetic mean of a set of numbers, you need to add up all the numbers and divide the sum by the total number of numbers. In this case, we have six numbers, so we need to add them up and divide by 6. Adding up the numbers, we get: 5 + 8 + 10 + 15 + 24 + 28 = 90 Then, we divide the sum by the total number of numbers: 90 / 6 = 15 Therefore, the arithmetic mean of 5, 8, 10, 15, 24 and 28 is 15.

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The reason why the average curve and the marginal curve are U-shaped in the short-run and flatter in the long-run is due to economies of scale. Economies of scale refer to the cost advantages that firms experience as they increase their production output. In the short-run, firms are often operating at less than their optimal capacity and therefore may experience diseconomies of scale as they increase output, which leads to higher average costs and a U-shaped average curve. Meanwhile, the marginal cost curve intersects the average cost curve at its minimum point, which is why it is also U-shaped in the short-run. However, in the long-run, firms have more time to adjust their inputs and can increase the scale of their operations. As they do so, they can experience economies of scale, which lead to lower average costs and a flatter average curve. This means that the marginal cost curve intersects the average cost curve at a lower point than in the short-run, making it flatter. Overall, this illustrates how economies of scale can affect a firm's production costs and how this can be reflected in the shape of the average and marginal cost curves.

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If the wage rate is less than the average revenue product (ARP), the firms would be earning a profit. The ARP is the amount of revenue generated by one unit of labor and is typically greater than the wage rate. If the firm is paying its workers less than the amount of revenue they generate, the firm will have extra revenue left over, which is a profit. So, in this situation, the firm would either be earning a normal profit or a super normal profit, depending on the size of the gap between the wage rate and the ARP. A normal profit is the minimum level of profit necessary for a firm to stay in business, while a super normal profit is a profit that is higher than the normal profit.

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In 1976, there were 8 live births for every 1,000 people in the population of the country. This means that for a population of 10 million people, there would be 8 x 10,000 = 80,000 live births in the country.

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A supply curve that slopes upwards from left to right indicates a positive slope. This means that as the price of a good or service increases, the quantity supplied by suppliers also increases. In other words, producers are willing to supply more of a good or service at higher prices. To understand why this is the case, think about it from the perspective of a supplier. If the price of a good or service goes up, it becomes more profitable for suppliers to produce and sell that good or service. As a result, suppliers are incentivized to increase their production in order to take advantage of the higher prices and earn more profits. This is why the quantity supplied by suppliers tends to increase as the price of a good or service increases. It's important to note that this explanation applies to the long run. In the short run, supply may be relatively fixed and a supply curve may be upward sloping or even backward sloping, indicating that the quantity supplied doesn't change much in response to changes in price. However, over the long run, suppliers have more time to adjust their production levels and the supply curve typically slopes upward.

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The quantity demanded (Qd) of a commodity is related to its price (P) through the equation Qd = 80 - 2P. So, if we know the price of the commodity, we can use this equation to find the quantity demanded. In this case, the price is given as ₦3. So, we can plug in this value of price into the equation to find the quantity demanded: Qd = 80 - 2P Qd = 80 - 2 * 3 Qd = 80 - 6 Qd = 74 Therefore, the quantity demanded when the price is ₦3 is 74 units.

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An oil spill is the release of a liquid petroleum hydrocarbon into the environment. This can occur in a variety of ways, such as from an oil tanker that leaks or a pipeline that ruptures. The oil can contaminate the water and harm wildlife, as well as damage the natural environment and disrupt human activities such as fishing and tourism. It is important to take measures to prevent and clean up oil spills to minimize their impact on the environment and local communities.

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Adam Smith's theory of value stated that the value of a commodity depends on the amount of labour expended on its production. Smith believed that in a market economy, the value of a good or service is determined by the amount of work required to produce it. According to his theory, the more time and effort that goes into making a product, the more valuable it becomes. This idea is known as the "labour theory of value." In simple terms, the value of a product is determined by the effort and time put into making it. The more effort and time required, the more valuable the product is considered to be. This theory is considered to be one of the foundations of classical economics and is still widely studied and discussed today.

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Capitalism is an economic system that uses the market mechanism. In a capitalist economy, individuals and businesses own and operate the means of production, and the prices of goods and services are determined by supply and demand in the marketplace. In simple terms, this means that people are free to produce and sell whatever they want, and consumers are free to buy whatever they want, at prices that are determined by the market. This creates an economy that is driven by competition and innovation, and is often associated with growth and prosperity. It is important to note that capitalism can take on different forms, ranging from a more laissez-faire approach with minimal government intervention, to a more regulated form with a larger role for the government in managing the economy.

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A contractionary monetary policy is used to control inflation. Inflation is a sustained increase in the general price level of goods and services in an economy over time. It occurs when there is too much money chasing too few goods, leading to an increase in demand and upward pressure on prices. A contractionary monetary policy is a type of economic policy used by central banks to reduce the money supply and increase the cost of borrowing, with the aim of slowing down the economy and reducing inflationary pressures. This can be achieved through several measures, such as raising interest rates, increasing reserve requirements for banks, and selling government securities in the open market. By reducing the supply of money and making it more expensive to borrow, the central bank aims to reduce spending and investment in the economy, which can help to lower inflation. A contractionary monetary policy is the opposite of an expansionary monetary policy, which is used to stimulate economic growth by increasing the money supply and lowering interest rates.

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The MC (marginal cost) curve will cut the AC (average cost) curve at the minimum point on the AC curve. This is because the minimum point on the AC curve represents the lowest average cost of production, and the MC curve intersecting the AC curve at this point indicates that the marginal cost of producing one more unit is equal to the average cost. In other words, at the minimum point on the AC curve, any further increase in production would lead to an increase in the average cost.

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The method of adding up all the rewards of the factors of production in national income is known as the "income approach." The income approach calculates national income by summing up all the income received by individuals and firms in the economy. This includes wages, salaries, interest, rent, and profits earned by the factors of production, such as labor, capital, and land. The idea behind this approach is that the total income generated in an economy is equal to the total amount spent on consumption and investment, and this spending creates the demand for goods and services produced in the economy. This method provides a comprehensive picture of the total income generated in the economy and is useful in understanding the distribution of income among different groups in the economy and the sources of economic growth.

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All of the options listed - I, II, III, and IV - can contribute to changes in supply. Technological advances in an industry can increase the efficiency of production and lower costs, leading to an increase in supply. Changes in labor costs, such as an increase in wages, can make production more expensive, leading to a decrease in supply. Changes in the source of supply, such as a new supplier entering the market or a current supplier becoming unavailable, can also impact supply. Finally, changes in levels of taxation, such as an increase in taxes on production, can make production more expensive and lead to a decrease in supply. Therefore, all four options can impact changes in supply.

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The basic principle underlying the location of industry is the tendency for production of a commodity to be located on the basis of "relative costs and benefits." The location of industry is determined by a variety of factors such as access to raw materials, labor supply, transportation, energy, and infrastructure. However, the primary factor is the cost and benefit analysis of each potential location. Industries tend to locate where the benefits of the location outweigh the costs. For example, an industry that requires large quantities of water may locate near a river or lake where water is abundant and cheap. An industry that produces heavy goods may locate near a port or railhead to reduce transportation costs. An industry that produces high-value products may locate near a skilled workforce or a research and development center to take advantage of the availability of talent. In general, industries seek to minimize their costs and maximize their benefits by locating in areas that provide the best combination of factors. This is why certain industries tend to be concentrated in particular regions or countries where the relative costs and benefits of production are most favorable.

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Inductive reasoning is a method of analysis that draws conclusions from data rather than general principles already known. In simple terms, inductive reasoning takes specific observations or pieces of evidence and uses them to form a general conclusion or pattern. For example, if you observe that every time it rains, the streets get wet, you can use inductive reasoning to conclude that rain causes the streets to get wet. In contrast, deductive reasoning starts with a general principle or premise and uses it to reach a specific conclusion. For example, if you know that all birds have feathers and you observe a creature with feathers, you can use deductive reasoning to conclude that it's a bird. Inductive reasoning is often used in scientific research, where data is collected and analyzed to form hypotheses or theories that can then be tested through further experimentation.

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Changes in demand can be influenced by various factors. Among them, changes in consumer preferences, real income, distribution of incomes, and levels of taxation can all affect the quantity of a good or service that consumers are willing and able to buy at a given price. I. Changes in consumer preferences refer to shifts in the tastes and preferences of consumers. For example, if people start to prefer healthier food options, the demand for fruits and vegetables may increase while the demand for processed foods may decrease. II. Changes in real income can also impact demand. If people's real income increases, they may be able to afford more goods and services, which can lead to an increase in demand for those products. Conversely, if real income decreases, consumers may cut back on their spending, leading to a decrease in demand. III. Changes in the distribution of incomes can also affect demand. If the distribution of incomes becomes more unequal, with some people becoming much richer and others becoming much poorer, this can impact the demand for certain products. For example, if the rich become richer, they may be more willing to purchase luxury goods, leading to an increase in demand for those products. On the other hand, if the poor become poorer, they may not be able to afford certain goods, leading to a decrease in demand. IV. Changes in levels of taxation can impact demand by affecting the disposable income of consumers. If taxes increase, consumers may have less disposable income, leading to a decrease in demand for certain goods and services. Conversely, if taxes decrease, consumers may have more disposable income, leading to an increase in demand for certain products. Therefore, the answer is: I, II, III, IV, since all four factors can account for changes in demand.

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"Provision of employment" is not a problem of agriculture. It is actually a benefit of agriculture. Agriculture provides job opportunities for people, from farmers to food processing workers. The other three options listed are actual problems faced by the agriculture industry: - Lack of preservation and storage facilities can lead to food waste and loss of income for farmers. - Land tenure system refers to the rules and regulations governing who can use and own land. In many countries, the land tenure system is not favorable for small farmers and can limit their ability to produce food. - Poor transportation systems can make it difficult for farmers to get their products to market and for consumers to access fresh food.

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Scarce. This means that there is not enough of a certain resource to meet the demand or needs of everyone in the community. As a result, choices have to be made about how to allocate these limited resources among different individuals, groups, or uses. When resources are scarce, it is important to make decisions about their use in the most efficient and effective way possible.

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The purchasing power of money depends upon the "price level". Price level refers to the general level of prices for goods and services in an economy. When the price level increases, the purchasing power of money decreases because it can buy fewer goods and services. Conversely, when the price level decreases, the purchasing power of money increases because it can buy more goods and services. For example, if a cup of coffee costs $2 and the price level remains the same, then $10 can buy 5 cups of coffee. However, if the price of coffee increases to $3, then the purchasing power of $10 decreases and can now only buy 3 and 1/3 cups of coffee. So, the purchasing power of money depends on the price level, because the price level determines how much goods and services money can buy.

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Consumer's surplus is represented by the area above the demand curve and below the market price. In the diagram, this would be the area represented by VWX. Consumer's surplus measures the difference between the amount that consumers are willing to pay for a good and the amount they actually pay. In the diagram, consumers are willing to pay more for the good up to the market price, represented by the height of the demand curve. The area VWX represents the amount by which they are benefiting from the market, as they are paying less than they would be willing to pay. So, the answer to the question is the area VWX represents consumer's surplus.

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When the supply of a commodity increases, it means that there is more of that commodity available in the market than before. This increase in supply causes the market to shift, leading to a change in the equilibrium price and quantity of that commodity. As the supply of the commodity increases, sellers will want to sell more of the commodity, but buyers may not want to buy as much at the higher price. This creates a surplus, where there is more supply than demand, causing the price to decrease. As the price decreases, buyers are more willing to buy the commodity, and sellers may reduce the amount they are willing to sell, until the market reaches a new equilibrium. This new equilibrium will have a lower price and a higher quantity bought and sold than before the increase in supply. Therefore, the correct answer is: a decrease in the equilibrium price and an increase in the equilibrium quantity bought and sold.

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In the short-run, a monopoly can make abnormal profit. Abnormal profit is a profit that is higher than the normal profit a company would make in a competitive market. This is because a monopoly has market power, meaning it has control over the price of its product and can set it higher than the market price, leading to higher profits. However, it's important to note that this situation is only temporary and in the long-run, competition and other factors can drive down prices and eliminate the abnormal profit.

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An isoquant shows equal level of output. An isoquant is a curve that represents all the possible combinations of inputs (such as labor and capital) that can produce the same level of output for a particular product or service. In other words, it represents all the different ways to produce the same amount of output using different combinations of inputs. So, all points on an isoquant represent the same level of output, and this level of output gives us the same satisfaction or usefulness. As we move along the isoquant, we can produce the same output using different combinations of inputs, but the level of output remains constant. In simple terms, an isoquant is a line that shows the different combinations of inputs that can produce the same level of output.

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In a perfect competition, the market price is determined by the market supply and demand junctions. This means that the price is set by the intersection of the supply of goods and services offered by producers and the demand for those goods and services by consumers. When there is a high demand for a good or service, the price will go up, and when there is a low demand, the price will go down. This is because producers will raise their prices when there is high demand in order to make more profit, and they will lower their prices when there is low demand to try to sell more goods. On the other hand, consumers will be willing to pay more for a good or service when there is high demand and they will be less willing to pay when there is low demand. The market price is a result of the negotiation between producers and consumers, and it reflects the balance between supply and demand in the market.

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If the demand for a commodity is perfectly elastic, it means that even a small change in price will cause a significant change in the quantity demanded. In other words, consumers are very sensitive to changes in price, and if the price increases, they will simply buy another substitute product that is cheaper. Now, if a tax is imposed on this commodity, it will cause the price of the commodity to increase. Since the demand is perfectly elastic, consumers will not be willing to pay the higher price and will switch to substitute products. As a result, the entire incidence of the tax falls on the seller or producer of the commodity. This is because the higher price caused by the tax will result in a decrease in the quantity demanded, and the producer will have to reduce the price in order to sell the product. Therefore, the producer bears the entire burden of the tax. In summary, if the demand for a commodity is perfectly elastic, the incidence of a tax on that commodity will be entirely on the seller or producer, as consumers are very sensitive to price changes and will switch to substitute products if the price increases.

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Restrictive monetary policy is designed to overcome inflation. Inflation is when the overall price level in an economy is rising, and the value of money is decreasing. The central bank can use restrictive monetary policy to reduce the amount of money in circulation and decrease aggregate demand, which will in turn help to curb inflation. For example, the central bank may increase interest rates, which makes borrowing money more expensive and reduces consumer spending. It may also sell government bonds, which reduces the amount of money available in the banking system. This type of policy is called restrictive because it restricts or slows down the growth of the economy, which helps to control inflation.

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The measure of location that is not a measure of location is "Range". A measure of location gives us an idea of where most of the values in a data set are concentrated. Arithmetic mean, Harmonic mean, and Geometric mean are all measures of location that give us a single value to represent the center of the data set. For example, the arithmetic mean is the sum of all the values divided by the number of values. The harmonic mean is the reciprocal of the arithmetic mean of the reciprocals of the data values. The geometric mean is the nth root of the product of n values. On the other hand, the range is a measure of spread, which gives us an idea of how spread out the values in a data set are. The range is simply the difference between the largest and smallest values in a data set.