Aptitude - Alligation or Mixture - Discussion
Discussion Forum : Alligation or Mixture - General Questions (Q.No. 1)
1.
A vessel is filled with liquid, 3 parts of which are water and 5 parts syrup. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?
Answer: Option
Explanation:
Suppose the vessel initially contains 8 litres of liquid.
Let x litres of this liquid be replaced with water.
| Quantity of water in new mixture = |  |
3 - | 3x | + x |  |
litres |
| 8 |
| Quantity of syrup in new mixture = | |
5 - | 5x | |
litres |
| 8 |
 |
|
3 - | 3x | + x | |
= | |
5 - | 5x | |
| 8 | 8 |
5x + 24 = 40 - 5x
10x = 16
| x = |
8 | . |
| 5 |
| So, part of the mixture replaced = | |
8 | x | 1 | |
= | 1 | . |
| 5 | 8 | 5 |
Discussion:
198 comments Page 18 of 20.
Ullas said:
8 years ago
Can anyone do it by allegation method?
Revathi said:
7 years ago
@Surrendar.
Nice explanation, thanks.
Nice explanation, thanks.
Gokul Ramakrishnan said:
4 years ago
Well said, nice answer. Thanks @Kiran.
Kavya.GV said:
7 years ago
Excellent explanation @Surendrareddy.
Chacha chodhary said:
1 decade ago
Here is simple approach
3/5-1/2=1:1
3/5-1/2=1:1
Prakash said:
4 years ago
Well said, Thank you so much @Ameer.
Raj said:
9 years ago
Actually the correct answer is 8/5.
Sandhya said:
2 decades ago
Can you give a shortcut for this?
Nisha said:
1 decade ago
I think amir done good solution.
Subhankar said:
1 decade ago
(bigger - smaller)/(2xbigger).
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