Microeconomics
21st Edition
ISBN: 9781259915727
Author: Campbell R. McConnell, Stanley L. Brue, Sean Masaki Flynn Dr.
Publisher: McGraw-Hill Education
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Question
Chapter 10, Problem 3RQ
To determine
Perfect competition .
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Consider the following costs for a typical perfectly competitive firm with no fixed costs (average total cost = average variable cost).
Average Total
Cost
Quantity
Marginal Cost
$24
1.
16.5
6$
12.67
3.
7.
15
11.25
12
5.
14.83
9.
a. Which of the following prices would be associated with a long-run equilibrium?
O $11.25
O $15
O $12
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In the table below, the firm;
Output Total Revenue Total Cost
$0
$30
$60
$90
$120
$150
$180
$25
$49
$69
$91
$117
$147
$180
O a. cannot be in a perfectly competitive industry, because its short-run economic profits
are greater than zero.
O b. must be in a perfectly competitive industry, because its marginal cost curve
eventually rises.
O c. cannot be in a perfectly competitive industry, because its long-run economic profits
are greater than zero
O d. must be in a perfectly competitive industry, because its marginal revenue is constant.
123 456
Figure 14-1
Suppose that a firm in a competitive market has the following cost curves:
Refer to Figure 14-1. If the market price falls below $6, the firm will earn
O a. positive economic profits in the short run.
O b. negative economic profits in the short run but remain in business.
O c. negative economic profits in the short run and shut down.
O d. zero economic profits in the short run.
PRICE
20
18
16
14
13
10
8
6
4
2
MC
1
2
3
QUANTITY
4
ATC
AVC
5
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- TIT Quantity 10 Total Cost Total Revenue $ 25 50 20 30 60 100 150 105 40 160 200 Based on the data above, a profit-maximizing firm in a perfectly competitive market would decide to produce: O 10 units of output. 40 units of output. 30 units of output. 20 units of output.arrow_forwardMC ATC AVC 23 22 16 MR 12 11 14 17 19 Quantity (units) Consider the perfectly competitive firm in the above figure. At what price will long-run equilibrium occur? Select one: O a. $23 O b. $22 O c. $11 O d. $12 Price (dollars per unit)arrow_forwardTable 14-5 Suppose that a firm in a competitive market faces the following revenues and costs: Quantity Marginal Cost Marginal Revenue (Units) (Dollars) (Dollars) 12 13 14 15 16 17 5 6 7 8 9 10 7 7 7 7 7 7 Refer to Table 14-5. If the firm is maximizing profit, how much profit is it earning? O a. $0.50 O b. $7.50 O c. $10 O d. There is insufficient data to determine the firm's profit.arrow_forward
- A perfectly competitive firm that makes car batteries has total fixed costs of $10,000 per month. The market price at which it can sell its output is $100 per battery. The firm's minimum AVC Is $105 per battery. The firm is currently producing 500 batteries a month (the output level at which MR=MC). This firm is making a O loss, shut down O profit, shut down O profit: increase O loss; increase and should. productionarrow_forwardConsider the following data facing a perfectly competitive firm: price = $20, quantity of output produced = 600 units, average total cost = $16, average fixed cost = $12, and marginal cost = $22. This firm should O a. increase output to maximize profit. O b. not change output in the short run since profit is already maximized. O c. shut down immediately. O d. reduce output but not shut down in the short run to maximize profit. O e. raise price above $20 to maximize profit in the short run.arrow_forwardSuppose that each firm in a competitive industry has the following costs: Total cost: TC = 50 + q2 Marginal cost: MC = q where q is an individual firms quantity produced. The market demand curve for this product is Demand:QD = 120 P where P is the price and Q is the total quantity of the good. Currently, there are 9 firms in the market. a. What is each firms fixed cost? What is its variable cost? Give the equation for average total cost. b. Graph average-total-cost curve and the marginal-cost curve for q from 5 to 15. At what quantity is average-total-cost curve at its minimum? What is marginal cost and average total cost at that quantity? c Give the equation for each firms supply curve. d. Give the equation for the market supply curve for the short run in which the number of firms is fixed. e. What is the equilibrium price and quantity for this market in the short run? f. In this equilibrium, how much does each firm produce? Calculate each firms profit or loss. Is there incentive for firms to enter or exit? g. In the long run with free entry and exit, what is the equilibrium price and quantity in this market? h. In this long-run equilibrium, how much does each firm produce? How many firms are in the market?arrow_forward
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