SOLUTION: Not in book. Jim's brakes charges $25 for parts and $55 per hour to fix the brakes on a car. Myron's Auto charges $40 for parts and $30 per hour to do the same job. What length

Question 70989: Not in book.
Jim's brakes charges $25 for parts and $55 per hour to fix the brakes on a car. Myron's Auto charges $40 for parts and $30 per hour to do the same job. What length of job in hours would have the smae cost of both shops?
Thank you for helping me. I hate written problems
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
For Jim's brakes use the equation: and for Myron use
To find out when they will cost the same, set the two equations equal to each other (in other words set the two unknown prices equal to each other)
Solve for x (the time)

So at 3/5 of an hour or at 36 minutes they will cost the same
RELATED QUESTIONS
I would appreciate help for this problem! I have tried everything!! To replace a set (answered by Alan3354)

The formula S=√30fd relates the speed S in miles per hour a car was traveling to... (answered by yeyitas)

The stopping distance of a car is the number of feet that the car travels after the... (answered by josmiceli)

A typical car's stopping distance on dry pavement "d" in feet can be approximated by the... (answered by nerdybill)

mariko paid 135 for parts and labor on new brakes for her car if the parts cost 85 and... (answered by josmiceli)

:)) Fix-It-Fast Plumbing charges $25 for a house call and $50 for each hour spent on... (answered by Mathtut)

fix it fast plumbing charges $25 for a house call and $50 for each hour spent on the job. (answered by dragonwalker)

Hello, I've tried giving this problem a go and I think I may have found a formula to help (answered by Boreal)

Tim is driving a truck to chicago. He is driving at 55 miles per hour and has to hit the (answered by xcentaur)