Question

Xavier needed to get his computer fixed. He took it to the repair store. The technician at the store worked on the computer for 4.5 hours and charged him $155 for parts. The total was $357.50. Write and solve an equation which can be used to determine xx, the cost of the labor per hour.

Answer 1

$45 - (357.50 - 155) / 4.5

Explanation:

First, we have to deduct the amount for parts ($155) by the total ($357.50). Once we find the difference ($202.5), we can now divide it by the amount of hours (4.5). This leaves us with the answer, $45.