Raymond B. answered • 07/19/21

Math, microeconomics or criminal justice

$105 per hour, $110 per hour total 15 hours total bill $1600

105x + 110y = 1600

x + y = 15

105x + 105 y = 1575

subtract to get 5 y= 25

y=5 hours = time the $110 per hour mechanic worked

x=10 hours = time the $105 per hour mechanic worked

10(105) + 5(110) = 1050 + 550 = 1600