Question 284282
Let us first analyse the truck movement

speed = 30 mph  time taken = 10 hours so distance between A & B = 300 miles

The truck has traveled 2 hours when the automobile starts

So it has traveled 60 miles in the 2 hours.

so remaining distance = 240 miles to city B

Let the speed of the automobile = x

time taken to reach the city by the automobile  = 300/x

But the truck takes 8 hours to reach the distance at the same time


300/x = 8

8x=300

x=300/8

x= 37.5 mph  which is the speed of the automobile