Question

Your plumber charges a flat rate of $150.00 to come out to your house and $55.50 per hour he is there. If the bill for your broken pipes was $344.25 how many hours was he there?

Answer 1

344.25-150=194.25; 194.25/55.5= 3.5 ~ 3.5 hours

Answer 2

Let x equals hours he was there.

344.25=150.00+55.50x
-150.00 -150.00
----------- ----------
194.25=55.50x

194.25/55.50=55.50x/55.50

3.50=x