Why, in perfect competition, is the marginal revenue curve perfectly elastic? b. Why is the marginal cost curve shaped the way it is?

Economics Today and Tomorrow, Student Edition
1st Edition
ISBN:9780078747663
Author:McGraw-Hill
Publisher:McGraw-Hill
Chapter9: Competition And Monopolies
Section: Chapter Questions
Problem 18AA
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a. Why, in perfect competition, is the marginal revenue curve perfectly elastic?

b. Why is the marginal cost curve shaped the way it is?

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