Let the car meet the truck after x minutes.

Speed of car 75 mph = 75/60 miles per minutes. Thus distance traveled by car = 75/60 x minutes

Similarly distance travelled by the truck = 60/60 ( x + 8 ) minutes

But both have traveled the same distance.

Thus 75/60 x=60/(60 )(x+8 )

75x=60x + 8x60

15x = 8 x 60 OR x = 32

Thus the car will overtake the truck after 32 minutes