Question 408032
speed of bus = xmph
speed of car =2x mph
..
since they are travelling in the same direction the resulting 
speed will be 2x-x=x mph.

..
speed = distance/time

distance apart = 68 miles
time = 2 hours
speed =x
..
2 = 68/x

multiply by x
2x=68
this is the speed of the car ===> 68 mph