The China's Best Restaurant chain had a 12% return on a $60,000 investment in new ovens. The

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Question:

The China's Best Restaurant chain had a 12% return on a $60,000 investment in new ovens. The investment resulted in increased sales, and the resultant increase in income amounted to 4% of the increase in sales. The amount of the increase in sales must have been

A. $7,200

B. $60,000

C. $180,000

D. $500,000