# Pipes and Cistern : SSC CGL Math Project 400 Questions

**Pipes and Cistern**

**About Pipes and Cistern**

I am posting 12 varieties questions on “**Pipes and Cistern**” . This is an easy chapter. Generally 1-2 questions can be asked in Tier 1 and 3-4 in Tier 2.

**Q1.**Two pipes A and B can fill a tank in 20 minutes and 30 minutes respectively. If both pipes are opened together, the time taken to fill the tank is:

**Q2.**Three tapes A, B, C can fill a tank in 12, 15, and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternatively, the tank will be full in:

**Q3.**A tap can empty a tank in one hour. A se cond tap can empty it in 30 minutes. If both the taps operate simultaneouly, how much time is needed to empty the tank?

**Q4.**A pump can fill a tank with water in 2 hours. Because of a leak in the tank it was taking 7/3 hours to fill the tank. Leak can drain all the water off the tank in:

**Q5.**A pipe can fill a tank with water in 3 hours. Due to leakage in bottom, it takes 7/2 hours to fill it. In what time the leak will empty the fully filled tank?

**Q6.**Two pipes A and B can fill cistern in 75/2 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled just in half an hour, if the pipe B is turned off after:

**Q7.**Two pipes can fill a tank with water in 15 and 12 hours respectively, and a third pipe can empty it in 4 hours. If the pipes be opened in order, at 8, 9 and 11 a.m. respectively, the tank will be emptied at

**Q8.**A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in

**Q9.**A tank has a leak which would empty the completely filled tank in 10 hours. If the tank is full of water and a tap is opened which admits 4 litres of water per minute in the tank, the leak takes 15 hours to empty the tank. How many litres of water does the tank hold?

**Q10.**Three pipes A, B, and C can fill a cistern in 6 hours. After working at it togther for 2 hours, C is closed and A and B fill it in 7 hours more. The time taken by C alone to fill the cistern is

**Q11.**A pipe of diameter d can drain a cerian water tank in 40 minutes. The time taken by a pipe of diameter 2 d for doing the same job in:

**Q12.**A swimming pool has 3 drain pipes. The first two pipes A and B, operating simultaneouly, can empty the pool in half the time C, the 3rd pipe, alone takes to empty it. Pipe A working alone, takes half the time taken by pipe B. Together they take 6 hours 40 minutes to empty the pool. Time taken by pipe A to empty the pool, in hours is

**Pipes and Cistern: Answer Key**

**For More Articles You Can Visit On Below Links :**

SSC CGL 2018 & 2019 Online Preparation New Batch

400 most important questions for SSC CGL Math Pinnacle

India’s 1st Hard Drive Course for SSC CGL 2018 & 2019

750 Most Important Questions For SSC CGL Economics

English Narration Series Part 12: 500 most 6

Maths Number System Practice Set For SSC CGL 2017

Important Synonyms Antonyms of English For SSC CGL / CHSL

Mathematics Mensuration based Question SSC CGL With explanation

Economics Solved MCQs For SSC CGL / CHSL :: Part – 12

Mission SSC CGL 2018 Tier-1-Day3-Reasoning Comprehensive revision series

**Now Get All Notifications And Updates In Your E-mail Account Just Enter Your E-mail Address Below And Verify Your Account To Get More Updates :**

please send me solution of second question.

question no 7 answer is d

need advance maths questions?

Sir plz explain q no. 9

Yes answer should be d

ans of 2nd is 7.06

reply of 9.

emptying the 3600 litres, leak takes 5 hours

so emptying the tank in 10 hour capacity must be 7200litr

Please explain Q12.

For Q:7 , answer should be option (d).