two mechanics worked on a car the first mechanic worked for 15 hours and the second mechanic worked for 5 hours together they charged a total of 1525 what was the rate charged per hour by each mechanic if the sum of the two rates was 175 per hour

Answer 1

If the rates are a and b, then we are told

a+b = 175
15a+5b = 1525

Now just solve for a and b.

Answer 2

Two mechanics worked on a car. The first mechanic worked for 15 hours, and the second mechanic worked for 5 hours. Together they charged a total of $1000. What was the rate charged per hour by each mechanic if the sum of the two rates was $110 per hour?