Aptitude - Chain Rule - Discussion
Discussion Forum : Chain Rule - General Questions (Q.No. 1)
1.
3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?
Answer: Option
Explanation:
Let the required number of working hours per day be x.
More pumps, Less working hours per day (Indirect Proportion)
Less days, More working hours per day (Indirect Proportion)
| Pumps | 4 | : | 3 |  |
:: 8 : x |
| Days | 1 | : | 2 |
4 x 1 x x = 3 x 2 x 8
 x = |
(3 x 2 x 8) |
| (4) |
x = 12.
Discussion:
69 comments Page 5 of 7.
Miss Mathphobia said:
1 decade ago
I liked MathMaster's method...quite simple and easy 2 understand...
Ram chowdary m said:
1 decade ago
Math master really thank you sir your said easy and simple method.
Eshita said:
4 years ago
I am not able to understand this. Can anyone please explain?
(3)
Azar- Benz said:
8 years ago
This question is asked for my interview in Mercedes Benz.
(4)
Ekta Ravish said:
1 decade ago
Its very much easy to solve question using these pattern.
Bernard said:
1 decade ago
4 x 1 x x = 3 x 2 x 8
x = (3 x 2 x 8) / (4)
x = 12.
x = (3 x 2 x 8) / (4)
x = 12.
Emilia said:
1 decade ago
I like @Mehar's Method. So simple to understand. Thanks.
Sanjit said:
1 decade ago
As a lay man I liked the DPH formula of meher.
Thanks.
Thanks.
Yogendra said:
1 decade ago
Thanks imraz your method is very easy to understand.
Ankita agrawal said:
1 decade ago
Its so simple. Just we need to apply correct logic.
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