Kate and Alice are small-town ready-mix concrete duopolists. The market demand function is Qd = 20,000 - 200P, where P is the price of a cubic yard of concrete and Qd is the number of cubic yards demanded per year. Marginal cost is $80 per cubic yard. The Cournot model describes the competition in this market. What is Kate's marginal revenue function?

A. MR = 100 - 0.005QK - 0.01QA

B. MR = 100 - 0.005QA - 0.005QK

C. MR = 100 - 0.005QA - 0.01QK

D. MR = 100 - 0.005QK - 0.005QA


C. MR = 100 - 0.005QA - 0.01QK

Economics

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