SOLUTION: Two mechanics worked on a car. The first mechanic worked for 20 hours and the second mechanic worked for 5 hours. Together they charged a total of $2475. What was the rate charged

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Two mechanics worked on a car. The first mechanic worked for 20 hours and the second mechanic worked for 5 hours. Together they charged a total of $2475. What was the rate charged       Log On


   

Question 1146927: Two mechanics worked on a car. The first mechanic worked for 20 hours and the second mechanic worked for 5 hours. Together they charged a total of $2475. What was the rate charged per hourby each mechanic if the sum of the two rated was $180 per hour?
Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
First Mechanic        x  dollars per hour

Second Mechanic       y  dollars per hour

system%2820x%2B5y=2475%2Cx%2By=180%29


system%284x%2By=495%2Cx%2By=180%29

E1-E2:
3x=315
highlight%28x=105%29-----------dollars per hour, the first mechanic
-
highlight%28y=75%29---------------------rate of second mechanic