Audrey needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 4.25 hours and charged her $156 for parts. The total was $347.25. What was the cost of labor, per hour?

**ANSWER: **

So in this problem, we know:

cost of parts= $156

number of hours= 4.25

total cost= $347.25

In order to solve it we must do an unwinding: cost of all hours labor= total cost−cost of parts

= 347.25−156

= 191.25

so 191.25/4.25 = 45, ANSWER: **$45** AN HOUR

So in this problem, we know:

cost of parts= $156

number of hours= 4.25

total cost= $347.25

In order to solve it we must do an unwinding:

cost of all hours labor= total cost−cost of parts

=

347.25−156

=

191.25

so 191.25/4.25 =

45

ANSWER: $45 AN HOUR