SOLUTION: Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours. Together they charged a total of 3450. What was the rate charge

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 15 hours. Together they charged a total of 3450. What was the rate charge      Log On


   

Question 894936: Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours. Together they charged a total of 3450. What was the rate charged per hour by each mechanic if the sum of the two rates was 195 per hour?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
a+b=195
20a+15b=3450
a = 105, b = 90