JAMB UTME - Economics - 2023

In a two by two model of international trade, it is assumed that

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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.

From the graph below, Point "E" shows--------------

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Point 'E" inside the graph indicates it is technologically inefficient" , Underemployed" or wide spread unemployent" or resources are not fully utilized or production inefficient"

Calculate the equilibrium level of national income (Y) where Y = C + I + G; C = 100 + 0.75Y; I = 50; G = 200

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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.

The fundamental problem of economics is

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The fundamental problem of Economics is Scarcity. Scarcity explains the basic economic problem that the world has limited or scarce resources to meet seemingly unlimited wants, and this reality forces people to make decisions about how to allocate resources in the most efficient way.

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To find the value of L when the supply (s) is equal to 20, we can use the given supply curve equation: S = 4L + 8.
The supply curve equation represents how much labor (L) will be supplied at a given wage rate (s). In this case, the equation tells us that the supply of labor is equal to 4 times the quantity of labor (L) plus 8.
To find L when s = 20, let's substitute s = 20 into the equation:
20 = 4L + 8
Next, let's isolate L by subtracting 8 from both sides of the equation:
20 - 8 = 4L
Simplifying further:
12 = 4L
Now, we need to solve for L. We can do this by dividing both sides of the equation by 4:
12/4 = 4L/4
Simplifying again:
3 = L
Therefore, when the supply (s) is equal to 20, the value of L is 3.
So the correct answer is 3.

The development of an economic hypothesis through intuition, insight, or logic is associated with

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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.

One major criticism of foreign aid to developing countries is that it

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The loans help to create poverty, as capital that could have been invested instead was channeled into debt repayment.

The demand for money will fall if

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If GDP falls, then people demand less money for transactions. As interest rate rise (fall), the demand for money will fall(rise).

The type of unemployment that occurs when an individual cannot find job as a result of obsolete skill is

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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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The marginal propensity to consume (MPC) is a measure of how much of an increase in income is typically spent on consumption. It is represented by the symbol c or ΔC/ΔY. To explain it simply, the MPC tells us the proportion of additional income that is used for consumption rather than saving or other purposes. For example, if the MPC is 0.8, it means that for every additional unit of income, 0.8 units are typically spent on consumption. The MPC can also be understood as the slope of the consumption function. The consumption function is a mathematical relationship between income and consumption. The MPC represents how much consumption changes for a given change in income. In the equation C = C + cYd, the coefficient c represents the MPC. This equation shows that consumption (C) is determined by autonomous consumption (C) plus the product of the MPC (c) and disposable income (Yd). In summary, the MPC is a measure of how much additional income is typically used for consumption. It can be represented as ΔC/ΔY, the slope of the consumption function, or the coefficient c in the consumption equation.

Macroeconomics focuses on the following units in an aggregative manner

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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.

Which of the following is the resultant effect of a fall in the profit margin of producers in an economy?

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A fall in the profit margin of producers in an economy will likely result in an increase in unemployment.
When the profit margin of producers decreases, it means that they are earning less profit from their business activities. As a result, they may struggle to cover their costs, sustain their operations, or expand their businesses. To manage their financial situation, producers may need to cut costs, reduce production, or even close down their business altogether.
Reduced production and business closures lead to a decrease in job opportunities and an increase in unemployment. When businesses are not making enough profit, they may need to lay off workers or reduce their workforce in order to cut costs. This means that fewer people will have jobs, resulting in higher unemployment rates.
Additionally, a fall in profit margins can also deter new businesses from entering the market or existing businesses from expanding. This further limits job creation and can exacerbate the unemployment problem.
In summary, a fall in the profit margin of producers in an economy leads to reduced production, business closures, job cuts, and a decrease in job opportunities. Therefore, the most likely resultant effect of such a decline in profit margin is an increase in unemployment.

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The measure that represents the natural growth rate of a population is the **Birth rate minus the Death rate**, which is the second option. The natural growth rate of a population refers to the rate at which the population increases or decreases due to births and deaths, without taking into account migration. It solely focuses on the difference between the number of births and the number of deaths occurring within a population during a specific period of time. When the birth rate exceeds the death rate, it results in a positive natural growth rate, meaning the population is increasing. On the other hand, if the death rate is higher than the birth rate, it leads to a negative natural growth rate, indicating a decrease in the population. The first option, "Natural increase - Birth rate + Net migration," takes into account both the birth rate and the net migration (the difference between the number of people migrating into and out of a population in a specific period). This measure considers factors beyond just births and deaths, so it does not accurately represent the natural growth rate. The third option, "Birth rate/Death rate," is a ratio of the birth rate to the death rate. It does not give a measure of the natural growth rate itself, but rather shows the relationship between the number of births and the number of deaths. The fourth option, "Birth + Net migration = Death," suggests an equality between the sum of births and net migration and the number of deaths. This equation does not accurately represent the natural growth rate since it assumes that the number of births and net migration should exactly match the number of deaths, which is unlikely in most populations. Therefore, the most appropriate measure for the natural growth rate of a population is the **Birth rate minus the Death rate**.

The "velocity" of money is

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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

If demand function for a product is Qd = 30 - 4P, and the price and quantity of products is 4 and 14 respectively. What is the price elasticity of demand for the product?

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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

The decision to consume more of one product under normal circumstances will apply

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The decision to consume more of one product under normal circumstances will **result in less consumption of another product**. When we have a limited amount of resources, we can only allocate them in certain ways. This is true for both individuals and businesses. If we choose to consume more of one product, it means we are using some of our resources to produce more of that product. As a result, we have less resources available to produce or consume other products. Let's take an example to understand this concept better. Suppose you have $10 to spend on food, and you can either choose to buy more fruits or more vegetables. If you decide to buy more fruits, it means you are allocating more of your budget towards fruits. As a result, you will have less money left to buy vegetables. On the other hand, if you decide to buy more vegetables, it means you are allocating more of your budget towards vegetables, and you will have less money left to buy fruits. Similarly, in a market economy, if consumers decide to buy more of one product (like smartphones), the demand for that product increases. This leads to an increase in production and consumption of smartphones. However, the resources used to produce smartphones are limited. Therefore, the production of other products (like laptops or tablets) may decrease because fewer resources are available to produce them. In conclusion, when the decision is made to consume more of one product, it generally means that less of another product will be consumed. This is because resources are limited and need to be allocated among different options.

The rate of output per worker (or group of workers) per unit time is called

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The correct answer is labour productivity.
Labour productivity refers to the rate at which output is produced by a worker or a group of workers in a given amount of time. It measures how efficiently and effectively workers are using their skills, time, and resources to produce goods or services.
To understand this concept, let's imagine a scenario where we have two workers producing bicycles. Worker A is able to produce 5 complete bicycles in one hour, while Worker B can only produce 3 complete bicycles in the same amount of time.
In this case, Worker A has a higher labour productivity because they are able to produce more output (bicycles) per unit of time (one hour) compared to Worker B.
Labour productivity is an essential measure for companies and economies because it directly impacts their profitability and competitiveness. Higher labour productivity means that more goods or services can be produced using the same amount of resources or in less time. This leads to lower costs per unit and can result in higher profits or the ability to lower prices for customers.
In summary, labour productivity is a measure of how efficiently workers are producing goods or services and is calculated by dividing the total output by the number of workers or the amount of time it took to produce that output.

Government uses all of the following ways to redistribute income, except

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The government uses various methods to redistribute income in society. Three of these ways are market intervention, transfer earnings, and taxation. Market intervention involves the government stepping in and regulating certain aspects of the economy to ensure fairness and reduce income inequality. For example, the government may set a minimum wage so that workers are guaranteed a certain level of income. Transfer earnings refer to government programs that provide financial assistance to individuals or families who are in need. These programs include welfare, unemployment benefits, and social security. The goal is to provide support to those who may have lower incomes or are facing financial difficulties. Taxation is another method used by the government to redistribute income. Through taxes, the government collects money from individuals and businesses based on their income or profits. This revenue is then used to fund public services such as healthcare, education, infrastructure, and social programs. However, the answer to the question is that the government does not use limited liability as a way to redistribute income. Limited liability is a legal concept that protects individuals from being personally liable for the debts and liabilities of a company. It is not directly related to income redistribution. In summary, the government redistributes income through market intervention, transfer earnings, and taxation. These methods aim to promote fairness and provide support to those in need. However, limited liability is not a method used for income redistribution.

All of the following describes conditions necessary for existence of a perfect market EXCEPT

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A perfect market is a theoretical concept that represents an idealized scenario where certain conditions are met. In this market, there is an equilibrium between supply and demand, and no single buyer or seller has the power to influence prices. In order for a perfect market to exist, there are several conditions that need to be met. These conditions include: - **Lack of homogeneity of goods**: In a perfect market, goods are assumed to be identical and indistinguishable from one another. This means that there are no variations in quality, features, or brand identity. Buyers are indifferent to which seller they purchase from since the goods are the same. - **Perfect knowledge**: Another crucial condition is that all buyers and sellers in the market have access to complete and accurate information. This means they know the current market prices, availability of goods, and all relevant factors influencing the buying and selling decisions. No hidden or asymmetric information exists that could give an advantage to any market participant. - **Large buyers and sellers**: A perfect market assumes that there are a significant number of buyers and sellers in the market. This ensures that no single buyer or seller has enough market power to influence prices or control the market conditions. Each participant is a price taker, meaning they accept the prevailing market price and cannot change it on their own. - **Portability of goods**: The final condition for a perfect market is the ease with which goods can be transported from one place to another. This means that there are no significant barriers to trade, such as transportation costs, tariffs, or restrictions. Goods can freely move between buyers and sellers, allowing for efficient market operations. Now, looking at the given options, we need to identify the one that does NOT describe a condition necessary for the existence of a perfect market. And that would be **"lack of homogeneity of goods"**. In a perfect market, goods are assumed to be identical and indistinguishable. This means that there are no variations in quality or features. Homogeneity is a vital characteristic of a perfect market, so the lack of it would hinder the existence of a perfect market. In summary, the conditions required for a perfect market are: perfect knowledge, large buyers and sellers, and portability of goods. While homogeneity of goods is a necessary condition for a perfect market, it is not described in the options as a condition necessary for the existence of a perfect market.

Agriculture accounts for about 60% of the

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Agriculture accounts for about 60% of the active labour force in West Africa. This is because a large portion of the population in West Africa is engaged in farming and other agricultural activities for their livelihood. The other options are incorrect as agriculture does not account for 60% of the arable land, service sector activities, or the commodity market in West Africa.

From the graph above, the consumer is at equilibrium at point

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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.

The part of income after tax that is not consumed is defined as

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The part of income after tax that is not consumed is defined as saving. Saving refers to the portion of income that is not spent on immediate consumption and is instead put aside for future use.
When we receive our income, we typically have various expenses to cover, such as bills, groceries, and entertainment. After deducting these expenses and taxes, we are left with a certain amount of money. If we choose not to spend this remaining amount and instead keep it for later, we are saving that money.
Saving is important because it allows us to build up financial security and prepare for unexpected expenses or future goals. It can also be used for long-term investments, such as buying a house or planning for retirement.
In summary, saving is the part of our income that we choose to set aside rather than using it immediately for consumption.

Real cost is

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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.

Which of the following shows why individual demand curve for a good usually slopes downward from left to right?

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A normal demand curve slopes downward from left to right indicating at higher price, less quantity will be demanded and vice versa.

Business cycle is associated with

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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.

Overpopulation is caused by

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The causes of overpopulation are: falling mortality rate, underutilized contraception, lack of female education etc.

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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.

Economic problem occurs when

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The economic problem occurs when there is scarcity relative to demand. Scarcity means that resources are limited, while demand refers to people's desires and needs for goods and services. In simple terms, the economic problem arises when there are not enough resources to satisfy everyone's wants and needs. This is because resources, such as land, labor, and capital, are finite, while people's desires are infinite. For example, imagine a small community with a limited amount of food available. If everyone in the community wants to eat, but there is not enough food for everyone, it creates an economic problem. This scarcity can lead to competition, as individuals and businesses try to obtain the limited resources. The economic problem is not caused by raw materials being imported or people being out of work. These factors can contribute to a country's economic challenges, but they are not the direct cause of the economic problem. Similarly, the absence of buyers for goods is a symptom of the economic problem, rather than the cause. If people cannot afford or do not want to buy goods, it indicates a mismatch between supply and demand. However, this does not explain why the economic problem exists in the first place. In summary, the economic problem occurs when there is scarcity relative to demand, meaning there are not enough resources to fulfill everyone's wants and needs. This scarcity leads to competition and the need for individuals and businesses to make choices regarding resource allocation.

An increase in nominal income without increase in price will result to

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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.

The quantity of commodity a consumer is willing and able to buy at a particular time is called

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The quantity of a commodity that a consumer is willing and able to buy at a particular time is called demand.
Demand refers to the consumer's desire or willingness to purchase a specific product or service at a given price and at a given time. It represents the customer's intent to buy and the amount they are willing to buy at various price levels.
It is important to note that demand is not just about the desire for a particular item, but also the consumer's ability to pay for it. For example, someone may wish or desire to buy a luxury car, but if they do not have the financial means to afford it, their demand for that car is limited.
In summary, demand is the quantity of a commodity that a consumer is both willing and able to buy at a given time, reflecting their desire for the product and their ability to pay for it.

The diagram above represent

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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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- Monetary policy is implemented by reducing the interest rates in the economy in order to increase the supply of money to enhance growth.

- The fiscal policy is implemented by the reduction of taxes and increasing government spending in order to boost demand.

- Policymakers may choose to implement a stabilization policy to close the recessionary gap and increase real GDP.

Which of the following Age group belongs to active Labour force?

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The age group that belongs to the active labor force is the **18 - 64 years** category. This age range is generally considered to be the working-age population, as it encompasses individuals who are old enough to work and have not yet reached the age of retirement. People in this age group are typically in their prime working years, where they have the physical ability and the necessary skills and knowledge to actively participate in the labor market. They are often seeking employment, working in various industries or sectors, and contributing to the economic growth and development of their country. It is important to note that the specific age range considered as the working-age population may vary slightly across different countries or regions. However, in most cases, it generally falls within the **18 - 64 years** age bracket. On the other hand, the other age groups mentioned in the options are not typically considered as part of the active labor force: - The **0 - 17 years** age group consists of individuals who are below the legal working age and are typically attending school or dependent on others for their livelihood. - The **15 - 25 years** age group partially overlaps with the working-age population, but it includes individuals who may still be in school or pursuing higher education. While some individuals within this age range may be actively seeking employment or working part-time, they are generally not considered as the core active labor force. - The **65 years and above** age group represents individuals who have reached the retirement age or are eligible for retirement benefits. While some individuals in this age range may continue to work, either out of choice or due to financial circumstances, they are not considered as the primary active labor force. In summary, the **18 - 64 years** age group is the one that belongs to the active labor force, consisting of individuals who are in their prime working years and actively participating in the labor market.

Economists refer to private goods as

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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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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).

A ............ in the price of the domestic currency in terms of a foreign currency is referred to as .............

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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.

The theory of ............... was propounded by ..................

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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.

When a kilogram of carrot is #8.00, 20 kilograms are demanded and when the price decreased to #6.000 per kilogram, 30 kilograms are demanded. The elasticity of demand equals to

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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

What is the lowest price the monopolist can charge

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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.

Public corporation is financed with

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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.