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A train speeds past a pole in 15 sec and a platform 100 metre long in 25 sec . What is the length of train in metres .

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A train speeds past a pole in 15 sec and a platform 100 metre long in 25 sec . What is the length of train in metres .
posted Sep 12, 2014 by Dilbagh

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2 Answers

+1 vote

150 meters ......

answer Nov 4, 2014 by Kshitij Maloo
+1 vote

let length of train =x meters
speed of train =(x/15)m/sec
speed of train=(x+100)/25 m/sec
so
x/15=(x+100)/25
25x=15x+1500
10x=1500
x=150 meter
so length of train =150 meter

answer Jan 31, 2016 by Mahendra Kumar Patel



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