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PIPE & CISTERNS - PART 6
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Pipe & Cistern Tricks - PART 6

## Pratiyogita Mantra is teaching live on Unacademy Plus

Pratiyogita Mantra
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good work sir ji
Ans of last ques: A 10 min., B 15 min. , LCM (Capacity is 30 litres), and efficiency is 3 (A) & 2 (B) respectively. Now when he expected it to fill.. leakage pipe was open.. so he closed it and it took 4 mins more to fill 30 litres (capacity). 4 mins. = (3+ 2) x 4 = 20 litres. So at the time he came to check it was 30-20 = 10 litres. So, we get (A+B-C) x 6 min. = 10 or (5-C) x 6 = 10 or C= 20/6. This is the efficiency of C or we can say this is the amount C is taking out per min. Now they are asking about the time in which tank will be emptied completely. Capacity of tank/Efficiency of C = 30 divided by 20/6. 9 will be the answer.
done sir..9 minutes... thnku so mch sir cmng back..😊
Varun Mishra
a year ago
can you tell me how this solve...
Karan sehrawat
a year ago
pls tell me too
Monita siwach
a year ago
which question is this dear...coz its question is not shown by clicking on this comment...so post the question here
Monita siwach
a year ago
which question is this dear...coz its question is not shown by clicking on this comment...so post the question here
Monita siwach
a year ago
which question is this dear...coz its question is not shown by clicking on this comment...so post the question here
Varun Mishra
a year ago
i did monita...its simple
8 months ago
Sakshi Arora
7 months ago
how to do it monita??
sir, i solved the homework question , answer is 9min , but i used traditional method i guess, which is time consuming. plzz discuss it in next lecture. and provide a quick solution if possible. thank you
Sakshi Arora
7 months ago
bhai pls explain krna h?
VN
Hello sir, kindly provide EASY TRICKS to solve the given type as well in Number System chapter - a). 1^2 - 2^2 + 3^2 - 4^2 + ...... - 10^2 is equal to ? b). The value of 1 - 1/20 + 1/20^2 - 1/20^3 + ...... correct to 5 places of decimal is? c). By adding the same constant to each of 31, 7, -1 a geometric progression results. The common ratio is? d). etc, etc.... Hoping to see you helping and solving soon! Thank you for being a great help...
a) -55 is it right?
sorry sir I m unable to solve home work questions. sit... even u r teaching well. mere like sharm ki bat h sir 1st attempt me solve nhi huya
1. PIPES & CISTERNS PART 6

3. PIPES & CISTERNS PART 6

4. : "lhert

5. 2-8 2 4

6. ' EtmL

7. -> 10 a. A

8. Jo in CAPACITY TIME 5 120 120 mn .

9. Jo win 8 So 1200

10. -20 MiM- 6 2o Cap 2.0 Min 20