Austin 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 $126 for parts. The total was $553.50. Which equation could be used to determine xx, the cost of labor per hour?

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ewomazinoade ewomazinoade · Answer 1 · 2021-09-22T14:12:54+02:00

The cost of labour per hour is $90.56

The total amount paid by Austin is the sum of the total cost of labour and the cost of the parts

Total amount paid = total cost of labour + cost of parts

$553.50 = total cost of labour + $126

total cost of labour = $533.50 - $126

= $407.50

The total cost of labour = cost of labour per hour x total time worked

$407.50 = xx × 4.5

xx = $407.50 / 4.5

xx = $90.56

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