Question

a train 320m long is traveling at a uniform speed of 66kmhr . if it passes a platform in 42 second , find the length of the plateform.

Answer 1

Here the train’s length is unnecessary or a better word would be misleading!

We can make do with the latter information.

The Train’s speed is 66 kilometers per hour (or) 66000 meters per 3600 sec.

By Cross Multiplication,

[(66000 x 42)/3600]

The train travels 770 m in 42 sec and thus gives the length of the platform.

Hope it helped!☺️