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Satsume Satsume
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6 years ago
Suppose there are seven firms in a market where the three largest firms supply 20% of the market-clearing quantity and the other four firms supply 10% of the market-clearing quantity.  What is the five-firm concentration ratio (i.e., the share of total sales controlled by the five largest firms in the market)?
A) 60%
B) 70%
C) 80%
D) 90%
Textbook 
Microeconomics

Microeconomics


Edition: 8th
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