Aptitude - Alligation or Mixture - Discussion
Discussion Forum : Alligation or Mixture - General Questions (Q.No. 9)
9.
A jar full of whisky contains 40% alcohol. A part of this whisky is replaced by another containing 19% alcohol and now the percentage of alcohol was found to be 26%. The quantity of whisky replaced is:
Answer: Option
Explanation:
By the rule of alligation, we have:
| Strength of first jar Strength of 2nd jar | ||
| 40% | Mean Strength 26% | 19% |
| 7 | 14 | |
So, ratio of 1st and 2nd quantities = 7 : 14 = 1 : 2
 Required quantity replaced = |
2 |
| 3 |
Discussion:
63 comments Page 7 of 7.
Raunak ranjan said:
3 years ago
Here, after solving we get 1:2.
If asked 1/3 will be original and 2/3 will be replaced.
If asked 1/3 will be original and 2/3 will be replaced.
(11)
Avdhoot Kumbhar said:
2 years ago
@Anupam.
if x ml quantity is removed then how did you take that 4 - 0.4x instead of x? Similar to 0.19x? Please explain to me.
if x ml quantity is removed then how did you take that 4 - 0.4x instead of x? Similar to 0.19x? Please explain to me.
(1)
Harshita said:
2 years ago
Suppose 1 liter of whisky and x of it removed,
(1-x).
Now x part id added with 19 % of alcohol content and the total we know is 26%.
Hence 40 per cent of (1-x)summed with 19% of x gives 26 per cent.
40(1-x)/100+19x/100 = 26/100.
= > x = 2/3.
(1-x).
Now x part id added with 19 % of alcohol content and the total we know is 26%.
Hence 40 per cent of (1-x)summed with 19% of x gives 26 per cent.
40(1-x)/100+19x/100 = 26/100.
= > x = 2/3.
(24)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers