Aptitude - Pipes and Cistern - Discussion
Discussion Forum : Pipes and Cistern - General Questions (Q.No. 1)
1.
Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P,Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes?
Answer: Option
Explanation:
| Part filled by (A + B + C) in 3 minutes = 3 |  |
1 | + | 1 | + | 1 |  |
= | |
3 x | 11 | |
= | 11 | . |
| 30 | 20 | 10 | 60 | 20 |
| Part filled by C in 3 minutes = | 3 | . |
| 10 |
 Required ratio = |
|
3 | x | 20 | |
= | 6 | . |
| 10 | 11 | 11 |
Discussion:
75 comments Page 5 of 8.
Sravanthi said:
9 years ago
Is it liters or minutes for a, b, c can you explain the question?
Yukta said:
1 decade ago
R is belongs to C.The ratio of the solution is obtained from dat.
M@n> said:
1 decade ago
Why should we multiply 3 with a b and c i.e 3*(1/30+1/20+1/10) ?
Shubha sahu said:
1 decade ago
Please tell me if there is any shortcut to solve this questions?
Vignes R said:
7 years ago
If pipe c is empty the tank. Put negative sign Why use + sign?
(1)
Bindu said:
9 years ago
Is there any easy trick to solve this problem, Plese tell me.
Vengatesh said:
1 decade ago
How is 11/60? from where this 11 came from? please explain.
Vinod said:
9 years ago
Please, anyone of you tell me How 11/20 is reciprocated?
Sadia said:
9 years ago
Can anybody share the simple method for this question?
Drishti Anand said:
9 years ago
Why they took the reciprocal of 11/20 in final step?
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