Question 1076574: two mechanics worked on a car, the first mechanic charged 55 dollars per hour and the second mechanic charged 115 dollars per hour. the mechanics worked for a combined total of 20 hours, and together they charged a total of 1400 dollars. how long did each mechanic work?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! two mechanics worked on a car, the first mechanic charged 55 dollars per hour and the second mechanic charged 115 dollars per hour. the mechanics worked for a combined total of 20 hours, and together they charged a total of 1400 dollars. how long did each mechanic work?
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Equations:
m + M = 20 hours
55m + 115M = 1400 dollars
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11m + 11M = 220
11m + 23M = 280
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Subtract and solve for "M":
12M = 60
M = 5 hrs (time the $115 per hr worked)
m = 15 hrs (time the $55 per hr worked)
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Cheers,
Stan H.
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