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?????
2 answers:
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
311-125= 186
186/ 31=6
It took 6 hours.
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