Question

An express train is 150 metres long and it is running at a speed of 90 km per hour. It

crosses a mail train, which is running on a parallel track in the opposite direction, in 6.3

seconds. When these two trains are travelling on parallel tracks in the same direction,

with the same speeds as before, they take 50.4 seconds to cross each other. The

length, in meters, of the mail train is:​

Answer 1

Answer:

The speed of a train = 90 kmph = 90 * 5/18 = 25 mps

Train crosses a 250 m long platform in 22 seconds.

So distance covered by train = speed * time = 25 * 22 = 550 m

Thus the length of train will be 550–250 = 300 m.