How long does it take an automobile traveling 72.5 km/h to become even with a car that is traveling in another lane at 54.5 km/h if the cars front bumpers are initially 141 m apart

7.83

Explanation:

Just using the speed, distance and time relation ... Let time be T

Use this formula and find the distance covered by automobile.

Do same for car ...

and at last subtract the distance of automobile to car = 141.

i. e (Distance of automobile - Dist. of car) = 141