two trains of length 110 metres and 90 metres are running on parallel lines in the same direction with a speed of 35 km per hour and 40 km per hour respectively. in what time will they pass each other?i am writing this question for the second time because in first time i have posted all options wrong so this time i am writing correct options. option A is correct.

1) 2 min 24 sec
2) 3 min 3 sec
3) 4 min 3 sec
4) 1 min 5 seconds

• speeds are 35 kmph and 40 kmph
  Total relative speed = 5 kmph = 5*5/18 m/sec
  Total distance to be travelled = 110+90=200mtrs
  time taken = 200/(5*5/18) = 200*18/25= 144 sec = 2 min 24 secs
• 11 years agoHelpfull: Yes(0) No(0)