Question

The length of a train and that of a platform are equal. If the train crosses the platform in one minute with a speed of 90 km/h
then the length of the train is:
750 m
800 m
700 m
850 m​

Answer 1

Answer:

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 metres) is : A. = 25 m/sec; Time = 1 min.

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Answer 2

Answer:

The answer is 750 m or .75 km

Explanation:

Here,

v=90km/h

t=1 min =1/60hr

So distance covered by train in 1 min

= 90 * 1/60 km

= 1.5 km

Since, both the front and the back side of the train need to travel through the platform.

So length of the platform = 1.5 km /2. = .75km

Therefore, the length of the train is .75 km or 750 m