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A train 100 metres long takes 6 seconds to cross a man walking at 5km/h in a direction opposite to that of a train.The speed of the train is

A train 100 metres long takes 6 seconds to cross a man walking at 5km/h in a direction opposite to that of a train.The speed of the train is

Grade:8

1 Answers

Vikas TU
14149 Points
one year ago
Let the speed of the train be x km/hr
Now we are given that a man walking at 5 kmph in a direction opposite to that of the train.
Relative speed of train = x+5 kmph 
In m/s this relative speed will be (x+5) * 5/18 m/s
Time = 6 sec
Distance = 100m 
6 = 100/((x+5)*5/18) 
x = 55 m
Hope this will help 

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