A train of length 270 m is moving at a speed of 50 kmph. It will cross a man coming from the opposite direction at speed of 4 kmph in
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Relative speed = 50+4 = 54 kmph
= ( 54* 5/18 )m/sec
= 15 m/sec
Required time = time taken to cover 270m at 15 m/sec =
(270/15)sec = 18 sec
The Train will cross the man coming from the opposite direction at speed of 4 kmph in 18 seconds.
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