SOLUTION: The bill for repair of a washing machine was $230. The cost for the parts was $45. The repairman worked for 1 hour and 30 minutes on the machine. What was the labor cost per hour?

Question 1009740: The bill for repair of a washing machine was $230. The cost for the parts was $45. The repairman worked for 1 hour and 30 minutes on the machine. What was the labor cost per hour?
Found 3 solutions by fractalier, stanbon, MathTherapy:
Answer by fractalier(6550)   (Show Source): You can put this solution on YOUR website!
His labor rate can be found by dividing
230 - 45 = $185 by one and a half hours and we get
$123.33 per hour labor charge.
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
The bill for repair of a washing machine was $230. The cost for the parts was $45. The repairman worked for 1 hour and 30 minutes on the machine. What was the labor cost per hour?
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C(x) = 45 + (3/2)x, where x is labor cost per hour
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Solve::
45 + (3/2)x = 230
(3/2)x = 170
x = $113.33
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Cheers,
Stan H.
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Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

The bill for repair of a washing machine was $230. The cost for the parts was $45. The repairman worked for 1 hour and 30 minutes on the machine. What was the labor cost per hour?

, or per hour
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