The length of a train and that of a platform are equal.

The length of a train and that of a platform are equal. If with a speed of 90 km/hr the train
crosses the platform in one minute, then the length of the train (in metres) is :

Let the length of train be x metre
Speed = 90 km/hr

=	90 × 5	metre/sec.
	18

= 25 metre/sec.
∴ Distance covered in 60 sec.
= 25 × 60 = 1500 metres
Now, according to question,
2x = 1500
∴ x = 750 metre