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

Correct Answer: 36 sec

Explanation:

Speed of train relative to jogger = (45 - 9) km/hr = 36 km/hr.


   = 36 x 5 ❩m/sec
18


   = 10 m/sec.


Distance to be covered = (240 + 120) m = 360 m.


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