SOLUTION: Solve the following problem using one variable and one equation/inequality. You must define the variable and all terms in the equation/inequality. You must answer the equation in s
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Question 359944: Solve the following problem using one variable and one equation/inequality. You must define the variable and all terms in the equation/inequality. You must answer the equation in sentence form.
Ian makes $15 an hour when he tutors and averages $10 an hour when he works at a local restaurant. Out of 30 hours working time, what is the minimum number of hours he should tutor if he is to make at least $475?
You can put this solution on YOUR website! Ian makes $15 an hour when he tutors and averages $10 an hour when he works at a local restaurant. Out of 30 hours working time, what is the minimum number of hours he should tutor if he is to make at least $475?
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t + r = 30 hrs
15t+10r = 475 dollars
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Multiply thru the 1st equation by 10 to get:
10t + 10r = 300
15t + 10r = 475
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Subtract 1st from 2nd and solve for "t".
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5t = 175
t = 35 hrs. (minimum tutoring time)
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Cheers,
Stan H.
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