Question

A 200 m long train travelling at 72 kmph crosses a platform in 20 seconds.Find the lenght of the platform

Answer 1

answer=200.refer to image for solution.

Answer 2

Answer:

The length of platform is 200m.

Explanation:

We have been given here that ,

Length of train=200m

Converting the Speed of the train from km/h to m/s.

Speed of train=72kmph=$\frac{72*1000}{3600} =20m/s$

Since we know that the general formula to find distance is,

                       $Distance=Speed*Time$

Distance travelled by the train in 20 seconds=20×20=400m

Length of the platform= Distance travelled by train - length of train

Length of the platform=400-200=200m

Hence the length of platform is 200m.