Question

A train is running at the rate of 60 kmph. A man is also going in the same direction on a track
parallel to the rails at a speed of 45 kmph. If the train crosses man in 48 seconds, the length of the train is?
(a) 50m
(b) 150m
(c) 100m
(d) 200m

Answer 1

b laga do
balaji sabke saath h
b hi ahi h
laga do
jai bajrang bsli ki
jai hin

Answer 2

answer : option (d) 200m

explanation : Let length of train is L

speed of train = 60kmph = 60 × 5/18 = 50/3 m/s

speed of man = 45kmph = 45 × 5/18 = 25/2 m/s

a/c to question, both train and man are going same direction.

so, relative speed of train with Respect to man = 50/3 m/s - 25/2 m/s

= (25/6) m/s

train crosses man in 48 second

so, length of train = relative speed of train with respect to man × time taken

= 25/6 × 48 = 25 × 8 = 200m

hence, length of train is 200m