A jogger running at 9 kmph alongside a railway track in 240 metres ah…

Question

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?

Accepted Answer

Option C. 36 sec. Answer & Solution Answer: Option C Solution: & Speed\, of\, train\, relative\, to\, jogger & = ( 45 - 9 )\, km/hr & = 36\, km/hr & 36 × 518 \, m/sec & = 10\, m/sec & Distance\, to\, be\, covered & = ( 240 + 120 )\,m & = 360\,m & Time\, taken & = 36010 \, sec & = 36\, sec