A train is running at a speed of 90 km/hr. If it crosses

A train is running at a speed of 90 km/hr. If it crosses a signal in 10 sec., the length of the train (in metres) is

Speed of train = 90 kmph

=		90 × 5		metre/second
		18

= 25 metre/second
If the length of the train be x then,

Speed of train =	Length of train
	Time taken in crossing the signal

⇒ 25 =	x
	10

⇒ x = 250 metre