If the four-firm concentration ratio in an oligopolistic industry is 100 percent and each firm has an equal percentage of sal Herfindahl index is A) 1,000. B) 3,750. C) 10,000. D) 2,500.
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Since each firm has an equal percentage of sales, each firm has $\frac{100\%}{4} = 25\%$ of the sales. Show more…
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