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3 years ago

7

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 $4

90, how many hours did it take to repair the car?
0.59 2.71 3.50 8.75

1 answer:

goblinko [34]3 years ago

4 0

80*x + 210 = 490 ;
80*x = 280 ;
x = 280÷80 ;
x = 3.50 ;

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