Question

Two cars leave the same point at the same time traveling in opposite directions. One car travels west at 20 mph and the other travels east at 60 mph. In how many hours will they be 280 miles apart?

-Please provide step by step :)

Answer 1

3.5 hours

Explanation:

It is given that,

Velocity of first car, v = 20 mph

Velocity of second car, v' = 60 mph

They are moving in opposite direction. Their relative speed is given by :

V = 20 mph + 60 mph = 80 mph

Distance, d = 280 miles

So,

`t=(d)/(V)\\\\t=(280)/(80)\ h\\\\t=3.5\ h`

Hene, they will be 280 mile apart in 3.5 hours.