Question

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 meters) is

Answer 1

Explanation:

length of the train and platform are equal

speed=90km/hr

it crosses in 1min

length of the train=9by10metres

Answer 2

Answer:

4. 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 meters) is

A) 500

B) 600

C) 750

Explanation:

Let length of both train and platform be x.

Distance covered by the train to cross the platform = x + x = 2x

Time = 1 min = 60 s

and speed = 90 km/h

= 90×518=25m/s90×518=25m/s

Therefore, Distane = Speed×TimeSpeed×Time

= 2x = 25 x 60

= x = 750 m