Pipes and Cisterns Questions Answers Online Quiz Test

• 1. Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long it will take to fill the tank ?

  1. 10 mins
  2. 12 mins
  3. 15 mins
  4. 20 mins

• 2. A cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both the taps are opened simultaneously, then after how much time cistern will get filled ?

  1. 7 hours
  2. 7.1 hours
  3. 7.2 hours
  4. 7.3 hours

• 3. A tap can fill a tank in 6 hours. After half the tank is filled then 3 more similar taps are opened. What will be total time taken to fill the tank completely.
  

  1. 2 hours 30 mins
  2. 2 hours 45 mins
  3. 3 hours 30 mins
  4. 3 hours 45 mins

• 4. A water tank is two-fifth full. Pipe A can fill a tank in 10 minutes and pipe B can empty in 6 minutes. If both the pipes are open, how long will it take to empty or fill the tank completely ?

  1. 6 min to empty
  2. 7 min to full
  3. 6 min to full
  4. 7 min to empty

• 5. Pipe A can fill a tank in 5 hours, pipe B in 10 hours and pipe C in 30 hours. If all the pipes are open, in how many hours will the tank be filled ?

  1. 2.5 hours
  2. 2 hours
  3. 3.5 hours
  4. 3 hours

• 6. Pipes A and B can fill a tank in 5 hours and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in.

  1. \begin{aligned} 3\frac{9}{5} \end{aligned}
  2. \begin{aligned} 3\frac{9}{17} \end{aligned}
  3. \begin{aligned} 3\frac{7}{5} \end{aligned}
  4. \begin{aligned} 3\frac{7}{17} \end{aligned}

• 7. A leak in the bottom of a tank can empty the full tank in 6 hours. An inlet pipe fills water at the rate of 4 litres a minute. When the tank is full, the inlet is opened and due to the leak the tank is empty in 8 hours. The capacity of the tank (in litres) is

  1. 5780 litres
  2. 5770 litres
  3. 5760 litres
  4. 5750 litres

• 8. 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. In what time the leak can drain out all the water of the tank and will make tank empty ?

  1. 10 hours
  2. 13 hours
  3. 17 hours
  4. 21 hours

• 9. A tank can be filled by a tap in 20 minutes and by another tap in 60 minutes. Both the taps are kept open for 10 minutes and then the first tap is shut off. After this, the tank will be completely filled in what time ?

  1. 10 mins
  2. 15 mins
  3. 20 mins
  4. 25 mins

• 10. A cistern can be filled in 9 hours but due to a leak at its bottom it takes 10 hours. If the cistern is full, then the time that the leak will take to make it empty will be ?

  1. 20 hours
  2. 19 hours
  3. 90 hours
  4. 80 hours

• 11. Taps A and B can fill a bucket in 12 minutes and 15 minutes respectively. If both are opened and A is closed after 3 minutes, how much further time would it take for B to fill the bucket?

  1. 8 min 15 sec
  2. 7 min 15 sec
  3. 6 min 15 sec
  4. 5 min 15 sec

• 12. A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. Find the time required by the first pipe to fill the tank ?

  1. 10 hours
  2. 15 hours
  3. 17 hours
  4. 18 hours

• 13. One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in

  1. 144 mins
  2. 140 mins
  3. 136 mins
  4. 132 minw

• 14. 12 buckets of water fill a tank when the capacity of each tank is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?

  1. 15 bukets
  2. 17 bukets
  3. 18 bukets
  4. 19 bukets

• 15. A tank can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tank from empty state if B is used for the first half time and then A and B fill it together for the other half.

  1. 15 mins
  2. 20 mins
  3. 25 mins
  4. 30 mins

• 16. Two pipes A and B can fill a tank in 6 hours and 4 hours respectively. If they are opened on alternate hours and if pipe A is opened first, in how many hours, the tank shall be full ?

  1. 3 hours
  2. 5 hours
  3. 7 hours
  4. 10 hours

• 17. There are two pipes which are functioning simultaneouly to fill a tank in 12 hours, if one pipe fills the tank 10 hours faster than other then how many hours second pipe will take to fill the tank ?

  1. 30 hours
  2. 35 hours
  3. 40 hours
  4. 42 hours