a truck and a car leave a service station

Question

a truck and a car leave a service station at the same time and travel in the same direction. the truck travels at 48 mph and the car travels at 42 mph. they can maintain radio contact within a range of 12 miles. when will they lose contact?

Answer 1

George,

 

The truck and car are traveling in the same direction.

 

The difference in speeds is 48-42 = 6 mph

 

In 1 hr they will be 6 miles apart, in 2 hrs they will be 12 miles apart.

 

So after 2 hrs they will lose radio contact.