arithmetic - a jogger running at 9 kmph alongside a railway track is 240 metres ahead of the engine of a 120 metre long train running at 45 kmph in the same direction in how much time will the train pass the jogger - skillgun

Speed of 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.
2Time taken = [360/10] sec = 36 sec.