Take FREE!! Online Cocubes Mock Test to Crack various Companies Written Exams.
Practice List of Paytm Coding Questions !!!
Take 30+ FREE!! Online Arithmetic Aptitude Mock test to crack any Exams.

# Pipes & Cistern Questions

Home > Quantitative Aptitude > Pipes & Cistern > General Questions
NA
SHSTTON
29
Solv. Corr.
40
Solv. In. Corr.
69
Attempted
1 M:1 S
Avg. Time

1 / 35

Choose the correct option.

Pipe A can fill a tank in 8 hours and Pipe B can fill it in 6 hours. If both the pipes are opened but after 2 hours pipe A is closed, then the other pipe will fill the tank in

A6 hours

B3 1/2 hours

C4 hours

D2 1/2 hours

ENone of these

Explanation:

Tank part filled by Pipe A in 1 hour = 1/8
or
Time taken to fill 1/8 part of tank filled A = 1 hour ------------- (1)

Tank part filled by Pipe B in 1 hours = 1/6
or
Time taken to fill 1/6 part of tank filled B = 1 hour ---------(2)

=> Tank Part filled by (A+B) in 1 hour = (1/8 + 1/6)

=> Tank Part filled by (A+B) in 2 hour = 2*(1/8 + 1/6) = 2*(3+4)/24 = 2*7/24 = 7/12

After 2 hours left over portion of tank = (1-7/12) = 5/12

Time taken to fill 1/6 part of tank filled B = 1 hour
so time taken to fill 5/12 part of tank by B = 6 * 5/12 = 5/2 = 2 1/2
=> So it takes 2 1/2 hrs (2hrs 30 min) to fill 5/12 of tank.

Workspace

NA
SHSTTON
36
Solv. Corr.
37
Solv. In. Corr.
73
Attempted
0 M:0 S
Avg. Time

2 / 35

Choose the correct option.

Two pipes A and B can fill a tank in 9 hours and 3 hours respectively. If they are opened on alternate hours and if pipe A is opened first, in how many hours will the tank be full?

A4 hrs

B5 hrs

C2 hrs

D6hrs

Explanation:

Tank part filled by pipe A in 1 hour =1/9
Tank part filled by pipe B in 1 hour =1/3

Given Pipe A and B are opened alternatively.

So Part filled in every 2 hours =(1/9+1/3)=4/9
Tank Part will be filled in 4 hour =2*4/9=8/9

Remaining part = (1-8/9)=1/9

So next is A turn.
So Pipe A will fill remaining 1/9 part in next 1 hour.

Total Time = (4 hrs + 1 hrs) = 5 hrs.

Workspace

NA
SHSTTON
41
Solv. Corr.
9
Solv. In. Corr.
50
Attempted
0 M:0 S
Avg. Time

3 / 35

Choose the correct option.

A pump takes 8 hours to fill an overhead tank, but due to an open tap in the kitchen, the time taken is 10 hours. In how much time would the kitchen tap empty a full overhead tank?

A20 hours

B40 hours

C30 hours

D60 hours

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
27
Solv. Corr.
34
Solv. In. Corr.
61
Attempted
0 M:0 S
Avg. Time

4 / 35

Choose the correct option.

Pipe A can fill a cistern in 6 hours less than Pipe B. Both the pipes together can fill the cistern in 4 hours. How much time would A take to fill the cistern all by itself?

A1 hour

B2 hours

C6 hours

D8 hours

ENone of these

Explanation:

Let's assume time required by Pipe A to fill the cistern = X hours
So Time required by Pipe B to fill the cistern = (X + 6) hours
? Both Pipes (A+B) can fill cistern in 1 hour = [1/X + 1/(X + 6)]
Given Both pipe fill the cistern in 4 hours
=> [1/X + 1/(X + 6)] = 1/4 => [(X+6) + X]/(X+6)*x = 1/4
4X + 24 + 4X = X2 + 6x
X2 - 2X - 24 = 0
(X-6)(X+4) = 0
=> A can fill cistern in 6 hours.

Workspace

NA
SHSTTON
29
Solv. Corr.
30
Solv. In. Corr.
59
Attempted
0 M:0 S
Avg. Time

5 / 35

Choose the correct option.

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

A81 min

B108 min

C144 min

D192 min

Explanation:

Lets assume time required by slower pipe alone to fill the tank = x minutes.
Then, faster pipe will fill it in x/3 minutes.
=> 1/x+3/x = 1/36
=>4/x = 1/36 => x = 144 min.

Workspace

NA
SHSTTON
17
Solv. Corr.
20
Solv. In. Corr.
37
Attempted
1 M:48 S
Avg. Time

6 / 35

Choose the correct option.

A tap supplies 8 litres of water per minute into a cistern. A leak at the bottom of the cistern can empty the cistern in 10 hours. A full tank with the tap open is emptied by the leak in 15 hours. What is the capacity of the tank?

A15000 litres

B12800 litres

C14400 litres

D13400 litres

ENone of these

Explanation:

Tank can be emptied by leak in 1 hour = 1/10
or
Time required to emptied 1/10 part of tank = 1 hour
Given full tank can be emptied by leak = 15 hours
or time need to emptied 1/15 part of tank by leak = 1 hours
so (1/10 - 1/15) part can be filled by tap = 1 hours
=> 1/30 part can be filled by tap = 1 hours
or
Time needed to fill the cistern by tap = 30 hours = 1800 minutes
so Capacity of cistern = 8 * 1800 = 14400 liters

Workspace

NA
SHSTTON
30
Solv. Corr.
26
Solv. In. Corr.
56
Attempted
0 M:0 S
Avg. Time

7 / 35

Choose the correct option.

Two pipes A and B can fill a cistern in 20 and 30 minutes respectively, and a third pipe C can empty it in 40 minutes. How long will it take to fill the cistern if all the three are opened at the same time?

A19 1/7 min

B15 1/7 min

C17 1/7 min

D7 1/7 min

Explanation:

Cistern part filled by pipe A in 1 min = 1/20
and by pipe B in 1 min = 1/30
Pipe C empty cistern in 1 min = 1/40 part.
When all pipes are open Cistern part will be filed = (1/20+1/30-1/40) = 7/120
=> Time required to fill the cistern = 120/7 = 17 1/7 min.

Workspace

NA
SHSTTON
22
Solv. Corr.
16
Solv. In. Corr.
38
Attempted
0 M:0 S
Avg. Time

8 / 35

Choose the correct option.

Bucket A has thrice the capacity as bucket B. It takes 80 turns for bucket A to fill the empty drum. How many turns it will take for both the buckets A and B, having each turn together to fill the empty drum?

A30

B60

C45

D80

Explanation:

Lets Assume capacity of bucket A = x
so capacity of bucket B = x/3

Given that it takes 80 turns for bucket A to fill the empty drum.
So capacity of the drum = 80x

Number of turns required if both A and B having each turn together=80x/(x+x/3)=240x/(3x+x)=60

Workspace

NA
SHSTTON
14
Solv. Corr.
17
Solv. In. Corr.
31
Attempted
0 M:0 S
Avg. Time

9 / 35

Choose the correct option.

A large tanker 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 tanker from empty state if B is used for half the time and A and B fill it together for the other half?

A27 min

B30 min

C20 min

D15 min

ENone of these

Explanation:

Tank part filled by pipe A in 1 minute = 1/60
Tank part filled by pipe B in 1 minute =1/40

So Tank Part filled by both pipes A and B in 1 minute = (1/60+1/40)=5/120=1/24

Lets Assume tanker get filled in x minutes.
Then, to fill the tanker from empty state, B is used for x/2 minutes
and A and B together is used for the rest x/2 minutes.

(x/2*1/40)+(x/2*1/24)=1
=> x/2(1/40+1/24)=1
=> x/2*8/120=1
=> x/30=1
=> x = 30 minutes

Workspace

NA
SHSTTON
6
Solv. Corr.
24
Solv. In. Corr.
30
Attempted
0 M:0 S
Avg. Time

10 / 35

Choose the correct option.

Pipe A can fill an empty tank in 12 hours. Pipe B can empty it in 36 hours. If at 8 a.m. the pipe A is opened on an empty water tank and pipe B is opended at 9 a.m., 10 a.m. 11 a.m. and 12 p.m. for 15 minutes each, by what time in the evening will the tank be filled?

A6 p.m.

B8 p.m.

C9 p.m.

D10 p.m.

Explanation:

Tank part filled by Pipe A in 1 hour = 1/12
similarly Tank part emptied by pipe B in 1 hour = 1/36
or Tank part emptied by pipe B in 15 min = 15 * 1/60*36 = 1/144

From 8 a.m. to 9 a.m. tank part filled = 1/12 => 11/12 of the tank is empty
From 9 a.m. to 10 a.m. tank part will be filled = (1/12 + 1/144) = 11/144 => 1 hour 11/144 of the tank gets filled
11/12 part of the tank would take = 11/12 x 144/11 = 12 hours
Total time required is 1 + 12 = 13 hours
=> Tank would be full @ 8 a.m. + 13 = 9 p.m.

Workspace

## Quantitative Aptitude Pipes & Cistern Questions and Answers pdf

At Quantitative Aptitude topic Pipes & Cistern, you will get multiple online quiz difficulty wise, which will have a total of 6 quizzes, categorized as easy, medium, and moderate level. While preparing for any Pipes & Cistern, take all the list quiz and check your preparation level for that topic. Each quiz have 10 different question, which needs to be answered in 20 min., all the listed quiz here is free, however, you will get only one chance for each quiz to attempt(Take Quiz seriously), so it is always recommended to take one quiz in each section before you start solving Pipes & Cistern MCQs practice question, and one after solving all the question of the respective level, you can refer back your Pipes & Cistern quiz result any time or you can download it as pdf for reference.

## Quantitative Aptitude Pipes & Cistern Customize Online Mock Test

This is own type of mock test, where At this Quantitative Aptitude Pipes & Cistern MCQs mock test section, you will able to attempt only the questions related to Pipes & Cistern, in that question will be a different level, important, and all the questions will be part of some of the mock tests across Q4interview FREE Mock test. You need to choose the topic as Pipes & Cistern, and click on Double click to generate your customize mock test. While attempting the mock test you need to choose any of the one options out of given option. It is recommended to go through the direction given along with each question, as these questions will be randomly and so that same direction will not be applicable across the entire test. Once you submit your mock test, the result will be generated for Pipes & Cistern Customize mock test, where your performance point points will be highlighted. Q4interview analysis every single point which helps you to improve your topic understanding and help you to know your type of mistakes and way to improve Pipes & Cistern questions, by providing the same type of practice questions from practice exercise. The best part of this Pipes & Cistern, all these mock tests listed here are free and you can take as Many time, as many you want. When you continue to give Pipes & Cistern Customize Online Mock Test here regularly, then you will understand how much you have developed your accuracy on a topic, after that you will be able to decide how much attention you need to focus on. Your continued practice will increase your confidence, speed and thinking ability intensely, the Pipes & Cistern Customize topic on which you will practice more will beneficial for you in future during campus placement.

## Quantitative Aptitude Pipes & Cistern Quiz Online Test

The details of the Quantitative Aptitude Pipes & Cistern quiz are as follows. There are 10 questions for you. You have to answer them in 20 minutes. Within 20 minutes you have to see the errors in the sentences given as a question. Four options are also given to you, and you have to choose your opinion. You must be confident in your answer that the choices are difficult. Therefore, below we provide you with some information about Quantitative Aptitude Pipes & Cistern that you see and keep them in mind while answering questions.

## Quantitative Aptitude Pipes & Cistern MCQs Practice Questions with Answer

On this Pipes & Cistern section of page you will find the easiest quickest ways to solve a question, formulas, shortcuts and tips and tricks to solve various easiest methods to solve Pipes & Cistern Question Quickly. It contains all the Quantitative Aptitude topic Pipes & Cistern questions which are common in any of the preliminary exams of any company. The solution is provided along with the questions. The practice of these questions is a must as they are easy as well as scoring and asked in all the exams They will confirm the selection if all the questions attempted wisely with little practice. It is recommanded to Take Mock test based on Quantitative Aptitude topic and Pipes & Cistern topic based quiz.

## Quantitative Aptitude Pipes & Cistern solved examples question

You can get here fully solved Pipes & Cistern examples with a detailed answer and description. You can solve Pipes & Cistern problems with solutions, the questions by companies wise by filtering the questions, additionally, you can check what type of questions are being asked in IT companies Written Round from Pipes & Cistern. Pipes & Cistern became one of the most important sections in the entire competitive exams, Companies Campus, and entrance online test. Go through Pipes & Cistern Examples, Pipes & Cistern sample questions. You can Evaluate your level of preparation in Pipes & Cistern by Taking the Q4Interivew Pipes & Cistern Online Mock Test based on most important questions. All the Pipes & Cistern practice questions given here along with answers and explanations are absolutely free, you can take any number of time any mock Test.

## Why Quantitative Aptitude Pipes & Cistern?

In this practice section, you can practice Quantitative Aptitude Questions based on "Pipes & Cistern" and improve your skills in order to face the interview, competitive examination, IT companies Written exam, and various other entrance tests (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

## Where can I get Quantitative Aptitude Pipes & Cistern questions and answers with explanation?

Q4Interview provides you lots of fully solved Quantitative Aptitude (Pipes & Cistern) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. You can download Quantitative Aptitude Pipes & Cistern quiz questions with answers as PDF files and eBooks.

## Where can I get Quantitative Aptitude Pipes & Cistern Interview Questions and Answers (objective type, multiple-choice, quiz, solved examples)?

Here you can find objective type Quantitative Aptitude Pipes & Cistern questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.