SOLUTION: Two mechanics worked on a car. The first mechanic charged $85 per hour, and the second mechanic charged $80 per hour. The mechanics worked for a combined total of 25 hours, and tog
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Question 934113: Two mechanics worked on a car. The first mechanic charged $85 per hour, and the second mechanic charged $80 per hour. The mechanics worked for a combined total of 25 hours, and together they charged a total of $2100. How long did each mechanic work?
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!
x hours done at 85 per hour, y hours done at 80 per hour.
Divide members of the money equation by 5:
;
Better now?
Solve the system; Elimination Method may be a good way to start.
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