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calculating costs and equilibrium for perfect competition

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Below is a table with total data for a firm in a perfectly competitive industry.
Quantity Total Cost
0 100
10 220
15 300
20 360
25 450
30 600
35 770
40 960

a. What is the marginal cost and average total cost for the firm at each level of output?
b. If the prevailing market price is $34 per unit, how many units will be produced and sold? What are the profits per unit? What are total profits?
c. Is the industry in long run equilibrium at this price? If not, what do you expect to happen to price over time?

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Solution Summary

This solution contains step-by-step instructions in calculating costs and equilibrium for a perfectly competitive industry. It also determines the marginal cost, average cost, total profits and long run equilibrium with an interpreted analysis.

Solution Preview

Q TC MC ATC = TC/Q
0 100
10 220 (220-100)/10 = 12 22
15 300 (300 - 220)/5 = 16 20
20 360 12 18
25 450 18 18
30 600 30 ...

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