Question

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

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Given speed = 54km/h = 15m/s

It passes the man in 20s

Let the length of train be d

We know that, s = d/t

15=d/20

d=15x20= 300m

hence length of train is 300m

Train passes platform in 36s

Let the length of platform be l

Again, speed =distance/time

15=(300+l)/36

300+l = 15x36

l = 240 m

Hence length of platform is 240m

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