A jogger running at 9 kmph along side a railway track is 240 m ahead of the engine of a 120 m long t...........

Quantitative Aptitude ( CCS) Time & distance

A jogger running at 9 kmph along side a railway track is 240 m ahead of the engine of a 120 m long train running at 45 kmph in the same direction. In how much time will the train pass the jogger?

3.6 second

18 second

36 second

72 second

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Explanation:

Speed of train relative to jogger = (45-9) = 36 kmph
= 36*(5/18) = 10 m/sec
Distance to cover = 240 + 120 = 360 metre
Time = Distance/Speed
So, 360/10 = 36 sec.

Hence, option 3 is the correct answer.