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What is the length of the platform?

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A 300 metre long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform?

posted Jan 27, 2016 by Upma

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2 Answers

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Best answer

speed = 300/18 = 50/3 m/s
Let the length of the platform be x metres.
50/3 = ( x + 300) / 39
x = 350 m

answer Jan 27, 2016 by Jaspalsingh Parmar
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Speed = (300/18)m/sec=50/3 m/sec

So Let the length of the platform be x metres
(x+300)/39=50/3
3(x+300)=50x39
3x+900=1950
3x=1950-900
3x=1050
x=1050/3
x=350m
so length of platform is 350m

answer Jan 31, 2016 by Mahendra Kumar Patel



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