Each of the ten firms in an industry has 10 percent of the industry's total revenue.The four-firm concentration ratio is

Name: Each of the ten firms in an industry has 10 percent of the industry's total revenue.The four-firm concentration ratio is
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The four-firm concentration ratio is the sum of the market share held by the top four firms in an industry. In this case, each of the 10 firms has a market share of 10%, so the four-firm concentration ratio is 40%.

Each of the Ten Firms in an Industry Has 10