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?
0.59 2.71 3.50 8.75

Answer 1

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