Two trains are running in opposite directions on parallel tracks at the speed of 60 kmph and 40 kmph. Their lengths are 140 m and 160 m respectively. How long wil they take to cross each other?

Options
- 9 sec
- 9.6 sec
- 9.8 sec
- 10.8 sec

CORRECT ANSWER : 10.8 sec

Discussion Board
ans....10.8

60+40=100 km/hr
140+160=300 m
so time to cross each other =

100km.......1hr
1km........1hr/100
300m.........3600*300/100*1000=10.8 sec
sadananda pal

sadananda pal 08-6-2016 07:25 AM

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