desirjeanpierre desirjeanpierre

11-02-2017
Mathematics

contestada

The bill for repairing a car was $311 .The cost for parts was $125 .The cost for Labor was$ 31 per hour .How many hours did the repair work taking?????

Respuesta :

melissam620 melissam620

11-02-2017

311-125= 186
186/ 31=6
It took 6 hours.

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apologiabiology apologiabiology

11-02-2017

bill=parts+labor
labor=31 times hours or h
parts=125
bill=311

311=125+31h
minus 125 both sides
186=31h
divide both sides by 31
6=h

6 hours

Answer Link

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