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 4 of 7.
Tanut said:
9 years ago
I think the solution is wrong because 2/3 is the amount of alcohol the 2nd mixture contains which has been combined with the 1st mixture. So 2/3 can't be the whole mixture.
Manish said:
9 years ago
It should be 1/3 right? because in the question it was asked that quantity of whisky replaced not alcohol.
Mounika said:
9 years ago
Can anyone make it easy to understand?
AVINASH said:
9 years ago
Hi, I have a little doubt, from where this 19 came?
Sai said:
9 years ago
Quantity replaced in 1st jar is nothing but quantity added from 2nd jar. So, from the answer, the ratio is 1 : 2 which means the total number of parts (1 + 2) is 3.
Therefore the quantity of whiskey replaced is 2/3.
Therefore the quantity of whiskey replaced is 2/3.
Shahid said:
9 years ago
Please, let me get it clearly. Anyone help me.
Gowtham said:
9 years ago
Best explanation @Deepak Kumar.
Please anyone who didn't understand please follow that.
Please anyone who didn't understand please follow that.
Explorer said:
9 years ago
Here one confusion is about 2/3.
Final mixture should be in 1:2 proportion in which A is 1/3 part and B is 2/3 part. Here B is introduced in mixture by replacing A so Replaced quantity is 2/3.
Hope this can help. Thanks
Final mixture should be in 1:2 proportion in which A is 1/3 part and B is 2/3 part. Here B is introduced in mixture by replacing A so Replaced quantity is 2/3.
Hope this can help. Thanks
Tejesh said:
9 years ago
1/3 is the wrong answer.
As per Prakash' method, 2/3* 100 is right but it is the amount of alcohol and 1-2/3=1/3 is the answer of whisky which has 19% alcohol. In a question, they told that whisky which has 40% alcohol replaced by whisky of 19 % alcohol so its prove that 1/3 is the answer of whisky which has 19% & 40% combined alcohol. But in a problem, they asked replaced whisky means whisky which has 40% alcohol. So please tell anyone in detail what is the answer still I am not getting the answer.
As per Prakash' method, 2/3* 100 is right but it is the amount of alcohol and 1-2/3=1/3 is the answer of whisky which has 19% alcohol. In a question, they told that whisky which has 40% alcohol replaced by whisky of 19 % alcohol so its prove that 1/3 is the answer of whisky which has 19% & 40% combined alcohol. But in a problem, they asked replaced whisky means whisky which has 40% alcohol. So please tell anyone in detail what is the answer still I am not getting the answer.
Tejesh said:
9 years ago
Yeah, it's right. 2/3 is right answer. Great thanks @Prakash.
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