Two trains,one is of 121 m in length at the speed of 40km/hr and the other of 99m in length at the speed of 32km/hr are running in opposite directions.In how much time they will be completely  clear from each other from the moment they meet?

  • 10s
  • 11s
  • 16s
  • 21s
Two trains,one is of 121 m in length at the speed of 40km/hr and the other of 99m in length at the s
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