Pre-Algebra Answer 3

Pre-Algebra Answer 3:

3. A company purchases cell phones at a cost of x and sells the sell phones at four times the cost. What equation below represents the profit made on each sell phone?

A. x

B. 3x

C. 4x

D. 3 - x

E. 4 - x

The correct answer is B.

The sales price of each cell phone is four times the cost, which is x. So the sales price is 4x.

The difference between the sales price of each cell phone and the cost of each cell phone is the profit.

REMEMBER: Sales Price - Cost = Profit

In this problem, the sales price is 4x and the cost is x.

4x - x = Profit

3x = Profit

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