Question: 
A pump can fill a tank with water in 2 hours . Because of a leak , it took 213213 hours to fill the tank.The leak can drain all the water of the tank in -
4(13)4(13) hours
4(13)4(13) hours
14 hours
7 hours
Answer: 
14 hours
Last Updated: 
14/11/2021 - 22:29