POST UTME ABU 2017 Economics | Objective

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Question 1
The demand for a product is given by the equation Qd = 100 - 2P, where Qd is the quantity demanded and P is the price. The supply of the product is given by the equation Qs = 2P - 50, where Qs is the quantity supplied. Find the equilibrium price and quantity.
A. ₦50
B. ₦75
C. ₦100
D. ₦125
Question 2
A firm is producing a good with the following \cost function: C(q) = 2q^2 + 10q + 100. The firm is currently producing 10 units of the good. What is the marginal \cost of producing the 11th unit?
A. ₦20
B. ₦30
C. ₦40
D. ₦50
Question 3
A firm is producing a good with the following production function: Q = 2L^0.5 + 3K^0.5. The firm is currently producing 10 units of the good. What is the marginal product of labor?
A. 2
B. 3
C. 4
D. 5
Question 4
The demand function for a product is given by Q = 100 - 2P. If the price of the product is ₦20, what is the quantity demanded?
A. 50
B. 60
C. 70
D. 80
Question 5
A firm's total revenue (TR) is given by the equation TR = 100x - 2x^2, where x is the number of units sold. Find the price elasticity of demand when the quantity sold is 20 units.
A. 0.5
B. 1.0
C. 2.0
D. 3.0
Question 6
A firm's supply function is given by Q = 50 + 2P. If the price of the good (P) increases by 20%, what is the new value of the elasticity of supply (ES)?
A. 0.5
B. 1
C. 2
D. 3
Question 7
A firm's marginal revenue (MR) is given by the equation MR = 100 - 4x, where x is the number of units sold. Find the price elasticity of demand when the quantity sold is 20 units.
A. 0.5
B. 1.0
C. 2.0
D. 3.0
Question 8
A firm produces two products, A and B, u\sing two inputs, labor and capital. The production functions are Q_A = 2L - 3K and Q_B = 3L + 2K. If the firm has 10 units of labor and 5 units of capital, determine the optimal production plan.
A. Q_A = 10, Q_B = 5
B. Q_A = 5, Q_B = 10
C. Q_A = 15, Q_B = 0
D. Q_A = 0, Q_B = 15
Question 9
A country's GDP is given by the formula \( GDP = C + I + G + \( X - M \ \) ). If the country's GDP is $100 billion and the government exp\enditure is $20 billion, what is the value of the net exports?
A. $10 billion
B. $20 billion
C. $30 billion
D. $40 billion
Question 10
A country's GDP is given by the equation GDP = C + I + G + \( X - M \), where C is consumption, I is investment, G is government sp\ending, X is exports, and M is imports. If the country's GDP is ₦10 trillion, consumption is ₦3 trillion, investment is ₦1 trillion, government sp\ending is ₦2 trillion, exports are ₦2 trillion, and imports are ₦1 trillion, find the value of C + I + G.
A. ₦6 trillion
B. ₦7 trillion
C. ₦8 trillion
D. ₦9 trillion
Question 11
The elasticity of demand for a commodity is given by the formula \( eta = \frac{p}{x} \frac{dx}{dp} \). If the demand for a commodity is elastic, what can be concluded about the relationship between the price and quantity demanded?
A. The price and quantity demanded are inversely related.
B. The price and quantity demanded are directly related.
C. The price and quantity demanded are unrelated.
D. The price and quantity demanded have an ambiguous relationship.
Question 12
The money supply in an economy is given by M = 1000 + 0.5Y. If the money supply is ₦5000, what is the value of national income?
A. ₦5000
B. ₦6000
C. ₦7000
D. ₦8000
Question 13
A firm is considering two different market structures for selling a product. The first market structure is a perfect competition market, where the firm faces a demand curve given by P = 100 - Q. The second market structure is a monopoly market, where the firm faces a demand curve given by P = 150 - 2Q. If the firm produces 5,000 units of the product, what is the price in each market structure?
A. ₦50, ₦75
B. ₦75, ₦50
C. ₦100, ₦150
D. ₦150, ₦100
Question 14
A firm has a revenue function of R = 2x^2 + 3x, where x is the quantity sold. Find the marginal revenue function.
A. 4x + 3
B. 2x + 3
C. x + 3
D. x - 3
Question 15
Determine the equilibrium price and quantity of wheat in the market, given the demand function Qd = 100 - 2P and the supply function Qs = 2P - 10, where P is the price in naira.
A. ₦15, 50 units
B. ₦20, 30 units
C. ₦25, 20 units
D. ₦30, 10 units

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