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Question
If an industry has 25 firms that collectively have $150 million in total sales and the top three firms in this industry account for $78 million in sales and the fifth through twenty -fifth firms account for $60 million in sales, what is the amount of sales for the fourth largest firm?
A) $12 million
B) $6 million
C) $18 million
D) none of the above.
Answer
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