A jogger is running at 9 kmph alongside a railway track is 240 meters ahead of the engine of a 120 m......

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

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

=(36*5/18) m/sec  = 10 m/sec

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

 Time taken = 360/10 sec = 36 sec

Hence, option 4 is the correct answer.

By: Amit Kumar