Question

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 $1800 . What was the rate charged per hour by each mechanic if the sum of the two rates was $150 per hour?

Answer 1

You have to make a equation like 15m+5m=1800 and substitute m for 150 (m for dollars per hour. or whatever letter you want) and solve from there