SOLUTION: two mechanics worked ona car the first mechanic charged 115 per hour and the second mechanic charged 65 per hour the mechanics worked for a combined total of 15 hours and together
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Question 1115151: two mechanics worked ona car the first mechanic charged 115 per hour and the second mechanic charged 65 per hour the mechanics worked for a combined total of 15 hours and together they charged a total of 1475 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 115 per hour and the second mechanic charged 65 per hour the mechanics worked for a combined total of 15 hours and together they charged a total of 1475 how long did each mechanic work
Time Equation: f + s = 15 hrs
Cost Equation: 115f+65s = 1475 dollars
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Modify for elimination:
115f + 115s = 115*15
115f + 65s = 1475
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Subtract and solve for "s":
50s = 250
second mechanic = 5 hrs
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Substitute for "s" and solve for "f"::
first mechanic = 15-5 = 10 hrs
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Cheers,
Stan H.
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