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 11, Problem 3DQ
To determine
Entry and exit of the pure competition.
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Suppose that the pen-making industry is perfectly competitive. Also suppose that each current firm and any potential firms that might enter the industry all have identical cost curves, with minimum ATC = $1.25 per pen. If the market equilibrium price of pens is currently $1.50, what would you expect it to be in the long run? LO11.2 a. $0.25. b. $1.00. c. $1.25. d. $1.50.
The following figure shows the revenue and cost curves for a firm X.
RM
10
a.
b.
C.
7
6
LO
5
4
3.5
0
20 25 30
MC
40
AVC
AC
AR=MR
Units
If a firm X achieves productivity efficiency, what will be the total revenuel
generated
At what price will a firm stop operating? Please explain.
If the market price is RM4.00, what is the total profit or total loss.
4. Various measures of cost
Suppose the imaginary company of Roobek is a small, Jackson-based American apparel manufacturer specializing in athleisure. The following table
presents the brand's total cost of production at several different quantities.
Fill in the remaining cells of the following table.
Quantity Total Cost Marginal Cost
(Pairs) (Dollars) (Dollars)
0
1
2
3
4
LO
5
6
120
200
240
285
340
425
540
Fixed Cost Variable Cost
(Dollars) (Dollars)
Average Variable Cost
(Dollars per pair)
Average Total Cost
(Dollars per pair)
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- Consider the competitive market for rhodium. Assume that no matter how many firms operate in the industry, every firm is identical and faces the same marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves plotted in the following graph. COSTS (Dollars per pound) 80 72 64 56 co o 32 + 16 8 0 0 4 MC 0 ATC AVC 8 12 16 20 24 28 QUANTITY (Thousands of pounds) 32 38, 72 36 40 Ⓒarrow_forwardIn 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 456arrow_forwardRefer to this table to answer the next three questions. The accompanying table represents the quantity produced, the total revenue, and the total cost of a firm operating in a perfectly competitive market. Quantity 0 1 2 3 4 Profits are maximized when the firm produces O O O 2 0 1 04 O 3 Total Revenue $0 $6 $12 $18 $24 unit(s). Total Cost $6 $8 $12 $17 $24arrow_forward
- q 0 1 2 3 4 5 6 TFC $5 5 5 5 5 5 5 TVC $0 3 LO 5 9 16 25 36 MC - $3 2 4 7 9 11 P = MR $5 5 5 5 LO 5 5 5 A profit-maximizing firm should produce a quantity of TR $0 5 10 15 20 25 30 TC $5 8 10 14 21 30 41 Profit $-5 - 3 0 1 - 5 11 units. (Enter your response as a whole number.)arrow_forwardWhich of the following statements in the full competitive market is correct? Choose an answer 1. The companies maximize their profit according to the rule «price equals average total costs». O 2. The companies maximize their profit according to the rule "marginal costs equal average total costs". 3. In the short term, the companies always make a profit. O 4. In the short-term market result, it always applies that the market price is above the average total costs. 5. In the long-term market result, the market price corresponds to the average total costs.arrow_forward7. Long-run cost relationships The following graph shows the short-run average total cost curves and the long-run average cost curve for a publishing firm. The five marked quantities indicate points of tangency between each short-run average total cost curve (SRATC) and the long-run average cost curve (LRAC); for example, Q₁ marks the point of tangency between SRATC₁ and LRAC. The orange point on SRATC3 indicates the firm's current output level in the short run (Q3). COST PER UNIT SRATC₁ LRAC SRATC2 | " Q₂2₂ SRATC3 O " | 1 1 Q3 QUANTITY OF OUTPUT Q₁ SRATC5 SRATC4 1arrow_forward
- The table below describes a firm that sells output in a perfectly competitive market. Note the second column describes total costs. O $8 O $12 O $6 Output O $4 0 1 2 3 4 5 Which of the following market prices would cause the firm's profit-maximizing output level to be equal to 5? 6 Total Cost (in dollars) $3 $9 $14 $18 $23 $30 $40 4arrow_forwardIn the figure at right, at which output level is this firm earning negative economic profits? O A. 12 OB. 2 OC. 5 O D. 10 Revenues and Costs ($) 180 160- 140- 120 100+ 80- 60- 40- 20- of 0 2 4 6 8 10 Quantity 12 14 TC TR 16 18 20arrow_forward7. A car manufacturer builds both left-hand and right-hand drive cars. It estimates that its costs and the demand faced in each of these respective markets can be modelled by the functions below P1 = 520 – 3Q1 P, = 720 – 4Q2 - TC = 100Q1 + 120Q2 + 4Q1Q2 What is the maximum profit the firm could make? O 24300 O 24800 25300 25800 26500 O0000arrow_forward
- Suppose the market price for a price taking firm is known to be $2, the total revenue accruing to it if it sells 100 is and the total revenue accruing to it if it sells 200 is O $100, $200 O $200. $400 $200, $400 O 52. S2arrow_forwardThe figure shows a perfectly competitive firm. The firm is operating; that is, it has not shut down. The firm produces O A. 20 units of output and earns a normal profit. MC ATC 50 B. 10 units of output and incurs an economic loss. 40 O C. 10 units of output and earns a normal profit. O D. 20 units of output and incurs an economic loss. 30 MR 20 10 10 30 40 Quantity (per day) Price and costs (dollars) 20arrow_forwardIndustry Z is made up of the following firms. One firm makes up 40% of the total market sales, one of the firms make up 25%, one of the firms make up 20%, one firm makes up 10%, and the remaining firms make up 5% of the total market sales. What is the HHI for this industry? O 2,730 O 95 O 1.800 O 1,200arrow_forward
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