Practice Pipes and cisterns Questions and Answers

• Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 10 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If all ...
• Pipe ‘A’ and pipe ‘B’ can fill a cistern in 18 minutes and 16 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If all ...
• Pipe ‘A’ and pipe ‘B’ can fill a cistern in 15 minutes and 36 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If all ...
• Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 12 minutes respectively. Pipe ‘C’ alone can empty the cistern in 10 minutes. If all ...
• Pipe ‘A’ and pipe ‘B’ can fill a cistern in 30 minutes and 10 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If all ...
• Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 18 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If all ...
• Pipe A and B can fill the pool in 30 minutes and 20 minutes, respectively. Pipe C can empty half filled pool in 30 minutes. If all the pipes are opened tog...
• Pipe A and B can fill the pool in 36 minutes and 48 minutes, respectively. Pipe C can empty half filled pool in 36 minutes. If all the pipes are opened tog...
• A bought an article at 8% less of the marked price and sold it at 15% more than the marked price. Find the profit earned by him.
• Three pipes P, Q and R which are used to fill a tank. Each of the three pipes can be used either as an inlet pipe or as an outlet pipe. Each of the pipes P...
• The efficiency of pipe R is 60% more than the efficiency of pipe S. Pipe Q alone can fill 30% of the empty tank in 6 hours. Pipe R alone can fill an empty ...
• The time taken by pipe B3 alone to fill an empty tank completely is half of the time taken by pipe B1 alone to fill the same tank completely. Pipe B2 alone...
• Pipe Q and Pipe R together can fill a tank in 25 minutes. With Pipe S, all three pipes can fill the tank in 30 minutes. Pipe Q and Pipe T together can fill...
• Pipe L can empty the tank which is 45% filled in 9 hours. The time taken by pipe K and J together to fill an empty tank completely in 7.5 hours. Pipe J alo...
• Pipe P can fill a tank in 25 hours and Pipe Q can emptied it is 30 hours. Pipe P starts filling and they opened for 1 hour each alternatively in what time ...
• Pipe A can fill the empty tank in 25 minutes while pipe B can empty the half-filled same tank in 15 minutes. What is the time require to fill (80/3) % of t...
• Tap A and tap B can fill a tank in 20 hours and 25 hours respectively. If both the taps are opened together,then find the time after which tap B must be cl...
• Pipe P and Q can fill a tank in 20 minutes and 30 minutes individually. Another pipe R can empty the tank in 60 minutes. When all the three pipes are opene...
• Pipe T can empty a completely filled tank in 50 hours. Pipe R and T together can fill an empty tank completely in (z+5) hours. The efficiency of pipe R is ...
• Pipe A can fill a tank in 45 minutes while pipe B can fill it in ____ minutes. There’s a leak in the tank which can empty it in _____minutes. When both t...
• There are 6 inlet and (x-2) outlet pipes attached to a tank. Each inlet pipe takes 20 hours to fill the tank and each outlet pipe empties the fully filled ...
• Two vessels 'A' and 'B' contains 480 litres, each of pure milk and pure water, respectively. 120 litres of milk is withdrawn from vessel 'A' and poured in ...
• There are four pipes A, B, C and D where A and B are used to fill the tank and C and D are used to empty the tank. Pipe A and C together can fill the tank ...
• In bucket A and B, the quantity of mixture are (3z-25) litre and (5z+25) litre respectively. If (y-15) and (y+60) litres of water is mixed in bucket A and ...
• If a tank can be filled by a tap in 10 hours, but due to an outlet, it actually takes 5 hours longer to fill the tank, find the duration in which the outle...
• If a tank can be filled by a tap in 12 hours, but due to an outlet, it actually takes 6 hours longer to fill the tank, find the duration in which the outle...
• If a tank can be filled by a tap in 16 hours, but due to an outlet, it actually takes 4 hours longer to fill the tank, find the duration in which the outle...
• If a tank can be filled by a tap in 14 hours, but due to an outlet, it actually takes 4 hours longer to fill the tank, find the duration in which the outle...
• If a tank can be filled by a tap in 20 hours, but due to an outlet, it actually takes 8 hours longer to fill the tank, find the duration in which the outle...
• If a tank can be filled by a tap in 12 hours, but due to an outlet, it actually takes 8 hours longer to fill the tank, find the duration in which the outle...
• If a tank can be filled by a tap in 12 hours, but due to an outlet, it actually takes 9 hours longer to fill the tank, find the duration in which the outle...
• If a tank can be filled by a tap in 14 hours, but due to an outlet, it actually takes 7 hours longer to fill the tank, find the duration in which the outle...
• Two pipes, A and B, can independently fill the tank in 15 minutes and 25 minutes respectively, while pipe C can empty 9 gallons from the tank in 3 minutes....
• Two pipes, A and B, can independently fill the tank in 20 minutes and 25 minutes respectively, while pipe C can empty 7 gallons from the tank in 5 minutes....
• Two pipes, A and B, can independently fill the tank in 16 minutes and 20 minutes respectively, while pipe C can empty 5 gallons from the tank in 2 minutes....
• Two pipes, A and B, can independently fill the tank in 18 minutes and 20 minutes respectively, while pipe C can empty 8 gallons from the tank in 3 minutes....
• Tap A and Tap B fill a drum of volume 117 liters in 3 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the cister...
• Tap A and Tap B fill a drum of volume 408 liters in 12 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the ciste...
• Tap A and Tap B fill a drum of volume 483 liters in 21 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the ciste...
• Tap A and Tap B fill a drum of volume 357 liters in 17 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the ciste...