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 2150 dollars. What was the rate charged per hour by each mechanic if the sum of the two rates was 145 dollars per hour?
+591 Lets say the first mechanic makes x dollars per hour and the second mechanic makes y dollars per hour. We can say that
20x + 5y = 2150
x + y = 145
We can multiply the second equation by 5 and subtract it from the first:
5x + 5y = 725
15x = 1425
$x = \boxed{95}$
95 + y = 145
$y = \boxed{50}$
