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A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?

Correct Answer: 240 m

Explanation:

Speed = 54 x 5 ❩m/sec = 15 m/sec.
18


Length of the train = (15 x 20)m = 300 m.


Let the length of the platform be x metres.



Then, x + 300 = 15
36


x + 300 = 540


x = 240 m.


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