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 x 5/18) m/sec
= 10 m/sec
Distance covered = (240+120) m
= 360 m
Time taken = (360 / 10)sec
= 36 sec.