Aptitude - Pipes and Cistern - Discussion
Discussion Forum : Pipes and Cistern - General Questions (Q.No. 6)
6.
Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:
Answer: Option
Explanation:
| Work done by the waste pipe in 1 minute = | 1 | - |  |
1 | + | 1 |  |
| 15 | 20 | 24 |
| = | |
1 | - | 11 | |
| 15 | 120 |
| = - | 1 | . [-ve sign means emptying] |
| 40 |
 Volume of |
1 | part = 3 gallons. |
| 40 |
Volume of whole = (3 x 40) gallons = 120 gallons.
Discussion:
48 comments Page 5 of 5.
Manasa said:
1 decade ago
Thanks a lot. SRAVANREDDYPAILLA.
Ram said:
4 years ago
Thanks all for explaining.
(1)
Poonam said:
1 decade ago
What is mean by galloons?
Rakhshanda said:
7 years ago
How 3 gallons =1/40?
Zonked said:
1 decade ago
i dont get this one.
Somi said:
7 years ago
Thank you @Swapnil.
Somi said:
7 years ago
Thank you @Swapnil.
Rupinder kaur said:
1 decade ago
How did 11/120?
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