Vishwanath
Wednesday, February 20, 2013
13. An electric pump can fill a tank in 3 hours. Because of a leak in the tank, it took 3 hours 30 min to fill the tank. The leak can drain out all the water of the tank in
A.10 hours 30 min B.21 hours
C.12 hours D.24 hours
Answer: 21 hours
Explanation: Work done by the leak in 1 hour = (1/3) - (2/7) = 1/21 .
Leak will mpty the tank in 21 hours.
Title : Pipes And Cisterns Q13
Description : 13. An electric pump can fill a tank in 3 hours. Because of a leak in the tank, it took 3 hours 30 min to fill the tank. The leak can drain...
Rating : 5
