Question

The bill for the repair of a computer was $179. The cost for parts was $44, and the labor charge was $45 per hour. How many hours did it take to repair the computer?

Answer 1

44 + 45h = 179
45h = 179 - 44
45h = 135
h = 135/45
h = 3 <=== it took 3 hrs to repair

Answer 2

3 hours.

$179-$44=$135

$135/$45=3