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potatobot201
The correct answer is 9 hours

To find the unit rate, you divide 91 by 7 and get 13. Then divide 117 by 13 and get 9
Answer: 9 hours

It would be 9 hours because you need to divide 91 by 7 which is 13. This gives you the amount of money he makes each hour. Then, divide 117 by 13 which is 9. To check your work you can do 9 times 13 which equals 117.