Peter charges $5 an hour for babysitting. So far, he has earned
$75. How many more hours does he
need to babysit in order to earn a
total of $180?

21 more hours

Step-by-step explanation:

Divide $75 by $5 to know how many hours he worked for. 75/5 is 15. So he worked for 15 hours so far.

Then find out how many hours will make $180. 180/5 = 36 hours. He needs to work 36 hours to earn $180 but he already worked 15. So, find the amount left. 36 - 15 is 21 hours.

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step-by-step explanation:

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step-by-step explanation:

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