Question

Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 15 hours. Together they charged a total of $2475 . What was the rate charged per hour by each mechanic if the sum of the two rates was $200 per hour?

Answer 1

1st: 105/h

2nd: 95/h

Explanation:

10A+15B=2475 (1)

A+B=200 |*10 => 10A+10B=2000 (2)

From (1) - (2), we have 5B=475, so B=95

then A+95=200 so A is 105