A runner running at 10 kmph alongside a railway track is 250 meters ahead of the engine of a110 mete...........

Quantitative Aptitude (CDS) Problems on trains

A runner running at 10 kmph alongside a railway track is 250 meters ahead of the engine of a110 meter long train running at 64 kmph in the same direction. In how much time will the train pass the runner?

25sec

24sec

26sec

27sec

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Explanation:

Speed of train relative to runner = (64-10 )km/hr = 54km/hour

= (54x5/18) = 15m/sec

Distance to be covered = (250+ 110)m = 360m

Time taken = (360/15)sec = 24sec