A train 300 m long train running at a speed of 63 kilometre per hour cross a platform in 40 seconds what is the length of platform
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let the length of the platform be X
length of train is 300m
speed is 63km/hr.in ms/sec 63*5/18=17.5 m/sec
time is 40sec.
distance =s*t
=17.5*40
=700m
now subtract this distance from the length of train to find the length of platform...
700-300=400m..(length of platform)
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