mechanics word problem

Question

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 $3250

. What was the rate charged per hour by each mechanic if the sum of the two rates was $185

 per hour?

Answer 1

r represents the rate of the first mechanic

185 - r represents the rate of the second mechanic

20r + 15(185 - r) = 3250

Can you solve for r and answer?