A passenger train 150m long is travelling with a speed of

A passenger train 150m long is travelling with a speed of 36 km/ hr. If a man is cycling in the direction of train at 9 km/hr., the time taken by the train to pass the man is

Relative speed of train
= (36 – 9) kmph = 27 kmph

=	27 × 5	m/sec
	18

=	15	m/sec
	2

∴ Required time =	Length of the train
	Relative speed

=	150 × 2	= 20 seconds
	15