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 $3575.what was the rate charged per hour by each mechanic if the sum of the two rates was $200 per hour?

Answer 1

Lets say Mechanic 1 works for x and Mechanic 2 works for y.

So:

20x+15y=3575                    x+y=200

20x+15y=3575                    15x+15y=3000

So 5x =575

x=115

y=85