Question

Two mechanics worked on a car. The first mechanic charged $115 per hour, and the second mechanic charged $50 per hour. The mechanics worked for a combined total of 25 hours, and together they charged a total of $2,550. How long did each mechanic work?

Answer 1

115*20=2300.
50*5=250

First mechanic 20 hours
Second mechanic 5 hours