Latest GMAT Aptitude Question SOLUTION: A train travelling at 36 kmph takes 48 seconds to cross a bridge. It then crosses a man cycling at the rate of 9 kmph in the same direction in 20 seconds. Find the length of the br

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(#M40105423) GMAT Category question Keep an EYE

A train travelling at 36 kmph takes 48 seconds to cross a bridge. It then crosses a man cycling at the rate of 9 kmph in the same direction in 20 seconds. Find the length of the bridge
a)150 m b)220 m c)280 m d)330 m

Asked In GMAT Jaspalsingh Parmar (9 years ago)

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Thaslima Nasrin N  (8 years ago)

speed of the train= 36*(5/18)=10
10=(Length of train+Length of bridge)/48
L of train + L of Bridge =480 ---(1)
Man cycling at the speed of 9kmph, so Speed= 9*(5/18)= 2.5
2.5=D/20
Distance i.e length of train = 20 * 2.5= 150
From equation (1), Length of bridge = 480-150=330 m

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