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Bunuel
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Bunuel
The cost, in cents, of manufacturing x crayons is 570 + 0.5x. The crayons sell for 10 cents each. What is the minimum number of crayons that need to be sold so that the revenue received recoups the manufacturing cost?

A. 50

B. 57

C. 60

D. 61

E. 95

10x = 570 + 0.5x

Or, 9.5x = 570

Or, 95 = 5700

So, x = 5700/95

Or, x = 60, Answer must be (C)
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Bunuel
The cost, in cents, of manufacturing x crayons is 570 + 0.5x. The crayons sell for 10 cents each. What is the minimum number of crayons that need to be sold so that the revenue received recoups the manufacturing cost?

A. 50

B. 57

C. 60

D. 61

E. 95

Letting x = the number of crayons sold, we can create the equation:

10x = 570 + 0.5x

9.5x = 570

x = 60

Answer: C
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