Problema Solution
Two mechanics worked on a car. The first mechanic charged
$75
per hour, and the second mechanic charged
$70
per hour. The mechanics worked for a combined total of
25
hours, and together they charged a total of
$1800
. How long did each mechanic work?
Answer provided by our tutors
let
x = the number of hours the first mechanic worked
y = the number of hours the second mechanic worked
The mechanics worked for a combined total of 25 hours:
x + y = 25
and together they charged a total of $1800:
75x + 70y = 1800
by solving the system of equations:
x + y = 25
75x + 70y = 1800
we find:
x = 10 hr
y = 15 hr
click here to see the step by step solution of the system of equations:
the first mechanic worked 10 hours while the second mechanic worked 15 hours.