Arithmetic Questions And Answers :: Pipes Cisterns: part1

6.A tap can fill a tank in 16 minutes and another can empty it in 8 minutes. If the tank is already half full, and both the taps are opened together, the tank will be:

7.A tank is filled by a pipe A in 32 minutes and pipe B in 36 minutes. When full, it can be emptied by a pipe C in 20 minutes. If all the three pipes are opened simultaneously half of the tank will be filled in:

8.Two pipes X and Y can fill a cistern in 24 min and 32 min respectively. If both the pipes are opened together, then after how much time Y should be closed so that the tank is full in 18 minutes>

9.Three pipes A, B and C can fill a cistern in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill it in 7 hours. The time taken by C alone to fill the cistern is:

10.Two pipes A and B can fill a tank in 15 hours and 20 hours respectively while a third pipe C can empty the full tank in 25 hours. All the three pipes are opened in the beginning. After 10 hours, C is closed. The time taken to fill the tank is: