Question

Suppose that you currently own a clothes dryer that costs $35 per month to operate. A new efficient dryer costs $750 and has an estimated operating cost of $20 per month. How long will it take for the new dryer to pay for

itself?

Answer 1

The first dryer is 25 a month, so 25 times x, or 25x.

The second is 15 per month, plus an additional $710 cost, so 15x + 710. Set these equations equal to each other to find x, the amount of months where the cost of the first dryer will equal the cost of the second dryer.

Step-by-step explanation:

25x= 710 + 15x

-15x -15x

10x=710

x=71 months

Hope this helps

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