a train two hundred metre long is running at the rate of 45 km per hour how long it will take to cross a bridge 125 m long
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Step-by-step explanation:
Given:
Length of the train= 200m
Length of the bridge= 125m
Speed of the train= 45kmph or 45000/60*60 m/s = 450/36 m/s
total dist. to be covered by the train to cross the bridge= 200+125= 325m
s=d/t
450/36=325/t
t=325*36 / 450
t= 26 sec.
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