Question

Mary volunteered 3 hours on Monday, 5 hours on Tuesday, and 2 1/12 hours on Wednesday. How many more hours must she work to meet her weekly goal of 15 hours?

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Answer 1

4.92 hours

Explanation:

Let x = the number of hours left to work. I am converting the fraction to a decimal to make it easier to work with.

x + 3 + 5 + 2.08 = 15

Move constants to the right

x = 15 - 3 - 5 - 2.08

Do the math

x= 4.92