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James works as a tutor and a lawn mower. Both jobs require that he work at least three hours per week. Since James attends school, he can only work 15 hours a week. If James is paid $20 per hour as a tutor and $10 per hour as a lawn mower, which of the following is true about the number of hours he can work as a tutor (t) and lawn mower (m)?

James works as a tutor and a lawn mower Both jobs require that he work at least three hours per week Since James attends school he can only work 15 hours a week class=
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MrEquation
Answer: The correct choice is that he can maximize his earnings by working 12 hours as a tutor and 3 hours as a lawn mower.

James will make the most money by working at the job that pays him the most. However, he has to work at least 3 hours at $10 per hour. 

Therefore, he should work only 3 mowing lawns and the rest tutoring.

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