A computer repair company charges a fee and an hourly charge. After two hours the repair bill is $110, and after three hours it is $150. How much would it cost for 1.5 hours of work?

Question

anonymous · Answer

h=hourly rate
2h=110
3h=150
3h-2h=150-110
therefore, the hourly rate is 40 and hour.
for two hours they charged 110, so 40*2=80. 110-80 is 30. therefore, the beginning fee they charge is 30.
It is 30 to begin with then 40 for each hour of work.

anonymous · Answer

Ok so for the fee and the cost of 1.5 hours would be 30+40+20? $90?