Question

A car repair shop charged $80 per hour for labor and $210 for the parts of a car. If the total cost of repair for the car was $490, how many hours did it take to repair the car?
a 0.59
b 2.71
c 3.50
d 8.75

Answer 1

answer is c 3.50

hope it helps

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$490 - $210 = $280 
so $210: parts, $280: labor for hours

but $80 per hour
so $280 / $80 = 3.5 hours for labor