Latest GENPACT Aptitude Question SOLUTION: A train crosses a platform 100 m long in 60 seconds at a speed of 45 kmph.The time taken by the train to cross an electric pole is a)8 sec b)52 sec c)1 minute d)data inadequate

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(#M40005190) GENPACT Numerical Ability question Problem on trains Keep an EYE

A train crosses a platform 100 m long in 60 seconds at a speed of 45 kmph.The time taken by the train to cross an electric pole is
a)8 sec b)52 sec c)1 minute d)data inadequate

Asked In GENPACT (12 years ago)

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Jyotirmay Mohanta  (11 years ago)

Answer is b) 52 sec.

let the length of the train be x m.
and that of platform is 100m.

:., Total distance covered = (x+100)m
Speed of the train= 45 km/hr. = 45*5/18 m/s = 12.5 m/s

Since it crosses the platform in 60 sec.
So, (x+100)/12.5=60
or, x=60*12.5-100=650m

It will cross an electric pole in 650m/12.5m/s=52sec.

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