Pipes and Cisterns - Shortcuts & Tricks for Placement Tests, Job Interviews & Exams 

Practice Questions on "Pipes and Cisterns" available at: www.careerride.com/mcq/pipes-and-cistern-quantitative-aptitude-mcq-questions-21.aspx

"Simply invert" is the only thing that's keeping me alive

My mother told me , at night I was shouting ..."Simplyyyyyy Invert"

I find only career ride, feel free to learn and dear Sir give thorough teaching, others are only for already brilliant students, so these are the best tutors who genuinely care about the majority of us students.

31:30 6th question..Tank's capacity is fixed..till 10 am,it has been overflowing..so to empty the tank we have to consider only that fixed capacity of the tank.. I am doing it in a different way..efficiency method..in which i got tank capacity as 6 units..but till 10 am tank got filled my 11 units which means it was overflowing so when R is opened at 10 am,we dont need to consider the overflow,just tank capacity only.. ie 6/combined efficiency = 1 hr 12 minutes And answer is 11:12 am

This lecture is completely mind blowing... I am telling u guys... I have never seen anybody like this sir who explains everything in detail....!!

Sir, your channel is one of the most user-friendly. The communication in the videos is very simple. I like watching videos at 1.75X and 2X speed. However, the information is excellent.

Thank you for patiently and thoroughly explaining these maths concepts. Hoping this will help save me 😭...More power to your channel💪🙏

Carrer ride channel I am greatly thankful to students free of cost clarity concepts explaining thanking you so much .

Very nice set of questions...exactly what is required for cat. Thanks thanks a lot for providing a material with great solutions. Please keep posting more and more such videos.

Just an advice from me to everyone asking for shortcuts.... There are no shortcuts you just need to practice them than only you will get it..... You guyz asking everything in shortcuts there is no such thing in classes to they do same way.... So just practice them

Very well explained ! The way of teaching is so so good that it helps me to solve more and more difficult ques very easily.Your concepts are so good.whenever I have to do any question from any topic,I refer to your video first,it just also give people a great revision from your videos. Thank you so much for giving us those videos on quantitive aptitude.Make more and more videos on logical reasoning also.God bless you sir !

The simplyyy invert is even more funny at x2 speed 😂 Good explaination sir. Thank you

In the 6th problem, at 8 am tap P is opened(2 hrs before all three are open together) and needs 1.5 hrs to fill the tank(ie. P alone can fill the tank in 1.5hrs + half hour water is wasted). At 9 am tap Q is opened(1 hr before all three are opened together) and needs 2 hrs to fill the tank but since P can alone fill the tank, lets consider all the water of tap Q is wasted. Now at 10 am tap R is opened( needs 1/2 hrs to empty the tank). At 10am the tank is full and all 3 taps are open together. Total work done by all 3 taps is 2/3 + 1/2 - 2 = -5/6. So when all 3 are open together they will empty a filled tank in -6/5 hrs ie. 1.2 hrs(1hr and 12mins). Therefore, the tank will be empty at 11:12 am.

The concepts that u r teaching is so good, I thank you for sharing the indepth concept clarification

For the 9th problem P and Q can fill the tank in 6 hours And R empty in 30 hours for 2 hours it's work done is 1/15 So P and Q have to fill this 1/15th work So (6/15) *60mins Ans 24mins

Sir in ur quantitative section please add logarithm problem section also Explaination of all topics by u is amazing Thank u sir🙏

Yesterday i watched your time and work video today watching this only from single video I'm doing almost all sums you're such a great teacher

Sir you are really superb ❤❤ You explains each nd every concepts so clear 😍😍 Thank you so much❤❤❤❤

Thanks a lot 🙏Your videos are very helpful. Just one suggestion that please try to tell shortcuts to solve these questions for competitive exams. E.g. In the last question,we can directly find the amount of time required more. In 2 hours, pipe R emptied 2*1/30 part of the tank that is 1/15th part of tank. So P and Q in one hour can fill 5/30=1/6th part of tank.So just find time required for both of them to fill 1/15th part of tank. 1hr 1/6 ? hr 1/15 Cross multiplying you get 6/15 hr = 6×60/15 min =24 min

Conceptually Explained.....Thanks a lot Sir.....

Your explanation is very easy to understand. Thank you...

U changed my perception of CSat is tough to I can solve by ease(With technic).. Thank you ❤️

The way teach sir just awesome....

Sir ki teaching is SIMPILY GOOD!

Thank you very much for the video! It have made maths quite easy to understand. Could you please upload videos on arithmetic progressions and geometry.

U r the best teacher in explaining the things. Loved the way u explain the concepts and i understood all the concepts very clearly. Hats off to you sir. Keep it up!😊😇

Good explanation Sir. Thank you for uploading such lecture.

3 sum solve by using another simple method also bro Formula =XY/Y-X hrs 24×36/24-36=864/12=72

When you say it's very very easy we will confident enough to solve that problem tq sir 🙏👏👏

Really appreciate the way you teach sir!!!

Thank you, sir, for your efforts.I really like your videos. They are helpful !!

thanks a lot for putting up the content for free it's really awesome of you , keep it up !!!

OMG thankyou very much such a very informative video thank you sir,I was literally unable to solve any from this chapter but your video clears my concept and also how to solve it's questions to the toughest level

Thank you so much sir for all tricks and shortcuts.... 😊

Best channel for learning aptitude ❤️

thanks for such a good conceptual video......really understood well

Perfect Explanation !! Thanks a lot 👍

At 29:51 I think the solution ignore the total capacity of the tank. P can "fill" the tank in 1.5 hours and it was opened for 2 hours (8 to 10) I think the question is then rearranged to "How much time it will take to empty the full (overflowed)) tank while P and Q filling it after 10 am". i.e., =1/(1/2) -1/1.5 -1/2 =2-(7/6) =5/6 th part =6/5 hour = 1.2 hour but, I am getting 11:12 am and not 12:12 am.

Thank you so much Very good explanation.Easy to understand

So nice of you sir 🙏🤗🤗🙏 thank you so much for your support

shortcut for 6th question is (1/1.5)*1+((1/1.5)+(1/2))*1+((1/1.5)+(1/2)-(1/.5))*t=0

Iam preparing for Infosys,tcs placement exams. for apptitude round this video was Helped me a lot.

You explain it really well. Thanks for the video. Please upload videos on other topics as well. Thanks in advance.

Great video! Your channel is very helpful for me and i can learn the concepts easily! I subscribed!

sir in question no.-7 tap Q's time you have found to be equal to 18 hrs, now by that value if we try to find the time taken by P tap then it will come out to be 36 hrs according to your equation which is not possible since the tap P can fill at twice the rate as tap Q. In my view the equation should be Q=2P and not P=2Q. sir think about it...............then the answer will change

Awesome... Full concept covered flawlessly

Ur explanation .... Super sir...really I addicted to ur teaching...sir

sir,when to use invert and direct method to find out time . because in 5th problem we directly find time but in 7th problem we used invert method ?

Could someone suggest a book on quantitative aptitude for bank exams that covers all topics with shortcut methods? All the books I have follow the old conventional method.

Sir very nicely explained... thanks a lot for such videos but i have doubt in one Question: In Q6, they haven't mentioned that pipe A is closed when pipe B started, so does that didn't mean that after 1 hours both A and B is open... Please consider my doubt and reply 🙏

Sir it take more time for solving this type of question? Like question no9

Really good illustration

awe some training, clear, clarity , just shotting an arrow

Amazing sir. Thank You this helped me alot.

Thank you ...really well explained 👍

Thank you for easy concept of pipes and cistern

Simply Invert..😅😀😀😊 Well.. Thank you Sir. 😀

Well explained, thanks!

Sir please explained some more difficult problems that to new models

Super explanation sir. It is very helpful to solve the problems easily.

Sir please make vedios on Algebra & Geometry topics also please

Thank you sir😊it's really very helpful

The lcm of 38 19 and 133 should b 266 not 133

In question 6 the tank is completely filled before 9am. So the correct anwer will be 11.12

Thank you Sir...Very nice explanation..

Receive my Love and Respect brother ❤️

Great work!!

Thank u very much sir. Just because of u I think that this topic is easy😇

Thank you so much sir for this very helpful lectures.

Ur explaination is very easy to understand dull students also pass the exams

Sir mensuration pr video bna lo plzz me BMS ke entrance exam ki preparation kr rha hu or sbse mushkil topic yn hi hn

Thank you sooo much sir this is the first video i am seeing from ur channel after half the video i was able to solve the remaning ques of yours easilly by pausing Though i made minute mistakes i feel like i have understood the concept very well. Now i am going to watch your other videos. Thank you once again sir.

Thank you sir...may god bless you

Thank you sir ,very well explained !

Thank you I think we can shall may vphv understand the importance truth and value of pipes to carry water and the stresses they undergo and use natural materials like bamboo rosewood etc., for making them at any cost that prevent conduction widening and narrowing that result in repairs........................

Hello sir plz upload some more vedio of boats and stream and calander

sir i like yr vidio every youtuber is confusing by making 2-3 question in one vidio by part 1 part-2 like that but you complete one chapter in one vidio its makes student easy to understand.....very nic sir its help me lot..i will watch yr all vidio for my exam because yr full vidio is nt making me confuse....subscribed yr channel

There is a *very important and SCARY lesson* to be learnt with Q6 at 26:10 and the lesson is that *never use formula without understanding the complete logic behind it AND common sense and logic always prevails over formulae* because the formula used has been applied correctly but the answer is completely flawed , and thus this is what happens when students use formulae over common sense and logic The correct answer is 11:12AM and NOT 12:12 PM ( the working is pointed out in the other comments here , but i just wanted to bring to light the utmost importance of common sense and logic with respect to formula ) but discarding this, yet another excellent video to learn about aptitude !

Superb way of explanation. Thank you so much

Tq sir I understood this because of u sir. Once again tq sir

sir in q9 x/6 -2/30 =1(pipe p and q is continuously working till end so taken x, 2 hours pipe R worked in removing ) is my step is right??? any 1 help me

amazing way of teaching sir

In Q.6 ,If the tap P is opened at 8am,it will fill 2/3 amount of tank. Now at 9am,Q is also opened. now upto 10am the total tank filled is 11/6, which in Practical life states that the tank is overflowing. But now at 10am , R is opened which empties the tank in 1/2 hour. so isn't it right that the tank empties in 2:30 hours that is at 10:30am. Although, I understand that this is just an example that you have drawn to make the concept clear in these type of problems. For different numerical value it must have also covered the practical problem. But if such question is asked then what is advisable either to go with mathematics only or to keep in account for the practical overflow and stuff. Btw I love your Teaching style.

Thank you for your efforts

For ques 5, there is a formula nt/n^2-1. Where n=5, t=32.

All questions can be solved using single formula that is work= men x days

question 6 is in correct. bcz at 8 am if pipe p is on and 9 am pipe q is on then tank will flow.

Sir please make videos on calendar problems. The most difficult one's. As usual please make it easy for us 🙏🙏🙏🙏🙏🙏🙏🙏🙏

Very much useful very clear conceepts thank you sir

In question No.6 shouldn't the answer be 3hr 12min , because by 10:00 am the tank will be completely filled now the 3 taps are open and then it will only take 1hr 12 min to completely empty the tank. So a total of 3 hr 12min is needed.

Dear sir can u please make video on hor CFA is Different from Msc finance

Please do on Geometry 🙇🙇

Thank u so much .that was excellent 😇🌱

Excellent Teaching Style

Sir do on probability full topic pl

Sir, my doubt in example-6 ,in that if tap P open for 1 hr and after Q opened for 1 hr , it will full the tank 2 times then it will overflow ,so we have to take 1 or 2 at side?

AMAZING EXPLAINATION YRRRRRRRRR REALlY

Very well explained!

Simplyyyyyyyyyyyyyyyyy... Great explanation sir