In a double track rail route, two trains start simultaneously from the opposite stations 200 km apart. The train A runs Westwards at a speed of 50 km/hr and the opposite train B runs Eastwards at 40 km/hr . After 3h, what will be the distance between these two trains?

Correct option is A

Given:

- Distance between stations = 200 km

- Speed of Train A = 50 km/hr (Westwards)

- Speed of Train B = 40 km/hr (Eastwards)

- Time = 3 hours

Formula Used:

Distance covered = Speed × Time

Relative speed (since trains are moving towards each other) = Sum of their speeds

Solution:

Relative speed = 50 + 40 = 90 km/hr

Distance covered by both trains in 3 hours = 90 × 3 = 270 km

Since the initial distance between them is 200 km, and they have covered 270 km together, they must have crossed each other.

Distance between trains after 3 hours = Distance covered - Initial distance

= 270 - 200 = 70 km