Q: A cistern is normally filled in 5 hours. However, it takes 6 hours when there is a leak in its bottom. If the cistern is full, in what time shall the leak empty it?
A: 30 hours
Q: Pipe A can fill the cistern in 12 hours and Pipe B can empty the cistern in 21 hours respectively. If both pipes are opened together, how long will it take to fill the cistern?
A: 28 hours
Q: There are two pipes in a tank. Pipe A is for filling the tank and Pipe B is for emptying the tank. If A can fill the tank in 10 hours and B can empty the tank in 15 hours, then find how many hours will it take to completely fill a half-empty tank?
A: 15 hours
Q: Pipe A can fill the cistern in 21 hours and Pipe B can empty the cistern in 12 hours respectively. If both pipes are opened together, how long will it take to fill the cistern?
A: cistern can never be filled
Q: A cistern can be filled with water by a pipe in 5 hours and it can be emptied by a second pipe in 4 hours. If both the pipes are opened when the cistern is full, the time in which it will be emptied is :
A: 20 hours
Q: Pipe A can fill the cistern in 30 hours and Pipe B can empty the cistern in 21 hours respectively. If both pipes are opened together, how long will it take to fill the cistern?
A: cistern can never be filled
Q: A tap can fill a cistern in 8 hours and another can empty it in 16 hours. If both the taps are opened simultaneously the time (in hours) to fill the tank is
A: 16
Q: Pipe A can fill the cistern in 60 hours and Pipe B can empty the cistern in 12 hours respectively. If both pipes are opened together, how long will it take to fill the cistern?
A: cistern can never be filled
Q: A pipe usually fills a tank in 3 hours. On account of a leak at the bottom of the tank, it takes one more hour to fill the tank. How long will the leak take to empty a full tank if the pipe is shut?
A: 12 hours
Q: Pipe A can fill the cistern in 20 hours and Pipe B can empty the cistern in 36 hours respectively. If both pipes are opened together, how long will it take to fill the cistern?
A: 45 hours
Q: To fill a cistern, pipes A, B, and C take 25 minutes, 15 minutes and 12 minutes respectively. Find the time in minutes that the three pipes together will take to fill the cistern(approximately).
A: 5 minutes
Q: A cistern is normally filled in 8 hrs, but it takes 2 hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in ____________.
A: 40 hrs
Q: A pipe can fill a tank in 18 hours. Due to a leak in the bottom, it is filled in 26 hours. If the tank is full, how much time will the leak take to empty it?
A: 58.8 hrs
Q: Pipe A can fill a tank 3 times faster than pipe B. If both the pipes can fill the tank in 32 minutes, then the slower pipe alone will be able to fill the tank in?
A: 128 min
Q: Pipe A can fill the cistern in 15 hours and Pipe B can empty the cistern in 30 hours respectively. If both pipes are opened together, how long will it take to fill the cistern?
A: 30 hours
Q: A cistern is normally filled in 6 hours but takes 4 hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in how much time?
A: 15 hours
Q: Pipes A, B, and C can fill a tank individually in 5 min, 10 min, and 15 min respectively. Find the time taken to fill the tank when all three Pipes are opened simultaneously.
A: 2 $\frac{8}{11}$
Q: Two pipes can fill a tank in 6 hours and 8 hours. While a third pipe empties the full tank in 12 hours. If all the three pipes operate simultaneously, in how much time will the tank be filled?
A: 4 hours 48min
Q: A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 $\frac{1}{3}$ hours to fill the tank. The leak can drain all the water from the tank in
A: 14 hrs
Q: Pipe A can fill the cistern in 10 hours and Pipe B can empty the cistern in 12 hours respectively. If both pipes are opened together, how long will it take to fill the cistern?
A: 60 hours