Q: Which formula correctly represents economic profit?

$$\text{Economic Profit} = \text{Total Revenue} - \text{Total Cost}$$

Question 1

In a perfectly competitive industry, at what point is profit maximized?

Accepted Answer

Where marginal cost equals marginal revenue: $$MC = MR$$

Question 2

A firm in perfect competition should stop producing additional units when:

Accepted Answer

The marginal cost of the next unit exceeds the marginal revenue: $$MC \u003e MR$$

Question 3

Which of the following best describes a characteristic of a perfectly competitive market?

Accepted Answer

Firms are price takers

Question 4

If the market price is $$10, the marginal cost of producing the 100th unit is 10$$, and the average total cost is $8, what is the profit from producing 100 units?

Accepted Answer

$$200$$

Question 5

Which formula correctly represents economic profit?

Accepted Answer

$$	ext{Economic Profit} = 	ext{Total Revenue} - 	ext{Total Cost}$$

Question 6

In the short run, a firm should continue to operate even if it is making a loss as long as:

Accepted Answer

Price covers average variable cost: $$P \geq AVC$$

Question 7

At the long-run equilibrium in a perfectly competitive industry, what is true about the price?

Accepted Answer

Price equals the minimum average total cost: $$P = \min ATC$$

Question 8

Suppose a cotton farmer's total revenue is $$50,000 and total cost is 45$$,000. What is the area of economic profit?

Accepted Answer

$$5,000$$

Question 9

If a firm’s marginal cost curve is above its average variable cost curve at all output levels, what does this imply about the firm’s cost structure?

Accepted Answer

Average variable cost is rising as output increases

Question 10

A perfectly competitive firm faces a market price of $$15. Its marginal cost at 200 units is 15$$, and its average total cost at 200 units is $12. What is the firm’s total profit at this output level?

Accepted Answer

$$600$$

Question 11

Which of the following is NOT a feature of a perfectly competitive market?

Accepted Answer

Firms can influence the market price

Question 12

If a firm is producing at a level where $$P \u003c AVC$$, what should the firm do in the short run?

Accepted Answer

Shut down production immediately

Question 13

Which of the following equations represents the condition for a firm to maximize profit in perfect competition?

Accepted Answer

$$MR = MC$$

Question 14

If a firm’s total revenue is $$20,000, its total cost is 18$$,000, and its opportunity cost is $3,000, what is its economic profit?

Accepted Answer

$$-1,000$$

Question 15

A firm’s average total cost is $$10 at 500 units of output. If the market price is 12$$, what is the firm’s profit at this output level?

Accepted Answer

$$1,000$$

Question 16

Which of the following best explains why firms in perfect competition are considered price takers?

Accepted Answer

Each firm’s output is too small to affect the market price

Question 17

If a firm’s marginal cost is less than the market price, what should the firm do to maximize profit?

Accepted Answer

Increase output

Question 18

In the long run, what happens to economic profit in a perfectly competitive industry?

Accepted Answer

It is driven to zero by entry and exit of firms

Question 19

If a firm’s total cost is $$8,000, its total revenue is 10$$,000, and its fixed cost is $2,000, what is its variable cost?

Accepted Answer

$$6,000$$

Question 20

Which of the following best describes the break-even point for a firm in perfect competition?

Accepted Answer

Total revenue equals total cost: $$TR = TC$$

Profit Maximization and Perfect Competition: Key Concepts and Applications

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