Managerial Economics & Business Strategy 7th Edition by Michael Baye, Stanley Brue, David MacPherson

Exercise 1

The graph that accompanies this question illustrates two demand curves for a firm opreating in a differentiated product oligopoly. Initially, the firm charges a price of $60 and produces 10units of output. One of the demand curves is relevant when rivals match the firm's price changes; the other demand curve is relevants when rivals do not match price changes.
a. Which demand curve is relevant when rivals will match any price changes
b. Which demand curve is relevant when rivals will not match any price changes
c. Suppose the manager believes that rivals will match price cuts but will not match price increases
(1)What price will the firm be able to charge if it produces 20 units
(2)How many units will the firm sell if it charges a price of $70
(3)For what range in marginal cost will the firm continue to charge a price of $60