Assume that two companies (A and B) are duopolists who produce identical products. Demand for the products is given by the following linear demand function:P = 200 - QA -  QBwhere QA and QB are the quantities sold by the respective firms and P is the sellingprice. Total cost functions for the two companies areTCA = 1500 + 55QA + Q2ATCB = 1200 + 20QB + 2Q2BAssume that the firms act independently as in the Cournot model (i.e., each firmassumes that the other firm’s output will not change).a. Determine the long-run equilibrium output and selling price for each firm.b. Determine Firm A, Firm B, and total industry profits at the equilibrium solutionfound in Part (a).

Managerial Economics: Applications, Strategies and Tactics (MindTap Course List)
14th Edition
ISBN:9781305506381
Author:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Publisher:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Chapter12: Price And Output Determination: Oligopoly
Section: Chapter Questions
Problem 2E
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Assume that two companies (A and B) are duopolists who produce identical products. Demand for the products is given by the following linear demand function:
P = 200 - QA -  QB
where QA and QB are the quantities sold by the respective firms and P is the selling
price. Total cost functions for the two companies are
TCA = 1500 + 55QA + Q2A
TCB = 1200 + 20QB + 2Q2B
Assume that the firms act independently as in the Cournot model (i.e., each firm
assumes that the other firm’s output will not change).
a. Determine the long-run equilibrium output and selling price for each firm.
b. Determine Firm A, Firm B, and total industry profits at the equilibrium solution
found in Part (a).

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