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

The lengths 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, length of train = length of platform = x metre
Speed of train = 90 kmph

=		90 × 5		m/sec.
		18

= 25 m/sec.

∴ Speed of train =	Length of platform and train
	Time taken in crossing

⇒ 25 =	2x	⇒ 2x = 25 × 60
	60

⇒ x =	25 × 60	= 750 metre
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