Total industry sales are $105 million. The top four firms account for sales of $15%, 12%, 10%, 8% respectively. What is the three-firm concentration ratio?

Microeconomics
13th Edition
ISBN:9781337617406
Author:Roger A. Arnold
Publisher:Roger A. Arnold
Chapter11: Monopolistic Competition, Oligopoly, And Game Theory
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Total industry sales are $105 million. The top four firms account for sales of $15%, 12%, 10%, 8%
respectively. What is the three-firm concentration ratio?

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