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?

A) 190 meter

B) 265 meter

C) 240 meter

D) 175 meter

Speed = (54 * 5/18)

= 15 m/s

Length of the train = velocity * time

= (15 * 20) =300 meter

Assume that the length of platform be x meter

(x + 300)/36 = 15

x + 300 = 540

x = 240 meter

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