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Friday, November 30, 2018

A train travelling at a speed of 30 m/s crosses a platform, 600 m. long, in 30 sec

A train travelling at a speed of 30 m/s crosses a platform, 600 m. long, in 30 sec.The length (in metres) of train is
A120
B150
C200
D300

Answer is : B.) 150

Explanation:

Let the length of the train is x meter and Speed of the train is y meter/second
Then xy=15 [because distancespeed=time
y=15x

=>x+10025=x15x=150 meters

So length of the train is 150 meters

Nithin K
answered Apr 7 '2018 at 16:2

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