The speed of a train is 25m/sec.It takes 40sec to cross a platform of 700 m.What is the length of train.
 

Hi, We know that Speed = distancetimeso here length that will train cross in 40 second is the total length of train + plateform so let train is x m long  25 = x+70040x+700 = 1000x = 300 m 

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650 m
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let the length of train = x meter
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