Two Trains, One is of 121 m in Length at the Speed of 40 km/hour :
Two trains, one is of 121 m in length at the speed of 40 km/hour and the other is of 99 m in the length at the speed of 32 km/hour are running in opposite directions. In how much time will they be completely clear from each other from the moment they meet?
- 10 s
- 11 s
- 16 s
- 21 s
