SOLUTION: Two mechanics worked on a car. The first mechanic charged $45 per hour, and the second mechanic charged $85 per hour. The mechanics worked for a combined total of 20 hours, and tog
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Question 414122: Two mechanics worked on a car. The first mechanic charged $45 per hour, and the second mechanic charged $85 per hour. The mechanics worked for a combined total of 20 hours, and together they charged a total of $1100 . How long did each mechanic work?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = hours that 1st mechanic worked
Let = hours that 2nd mechanic worked
given:
(1)
(2)
Multiply both sides of (2) by and
subtract (2) from (1)
(1)
(2)
and
(2)
(2)
1st mechanic worked 15 hrs
2nd mechanic worked 5 hrs
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