Aptitude - Alligation or Mixture - Discussion
Discussion Forum : Alligation or Mixture - General Questions (Q.No. 8)
8.
A container contains 40 litres of milk. From this container 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?
Answer: Option
Explanation:
| Amount of milk left after 3 operations = |  |
40 |  |
1 - | 4 |  |
3 |  litres |
| 40 |
| = | |
40 x | 9 | x | 9 | x | 9 | |
= 29.16 litres. |
| 10 | 10 | 10 |
Discussion:
67 comments Page 2 of 7.
Cosul said:
7 years ago
Very well explained @Akshay Aswati.
The logic here is whenever something is taken out,
As Now, the basic principle is that;
When you remove any amount of the mixture, it removes both the liquids in the same ratio as the mixture itself.
Hence for the second time and third time we are using 4/40*4 for milk and 36/40 *4 water
and 32.4 /40 *4 for milk (29.16) and 8/40 *4 for water.
The logic here is whenever something is taken out,
As Now, the basic principle is that;
When you remove any amount of the mixture, it removes both the liquids in the same ratio as the mixture itself.
Hence for the second time and third time we are using 4/40*4 for milk and 36/40 *4 water
and 32.4 /40 *4 for milk (29.16) and 8/40 *4 for water.
Nandkishore said:
7 years ago
It's simple.
First, you take out 4ltr out of 40 ltr milk then mix 4ltr replace with water again you do further 2time means 4/40=36/40= (9/10) 3*40=29.16milk.
First, you take out 4ltr out of 40 ltr milk then mix 4ltr replace with water again you do further 2time means 4/40=36/40= (9/10) 3*40=29.16milk.
(1)
Shree said:
7 years ago
I get the solution with the help of given explanation, Thanks.
Sivaprasanth said:
8 years ago
Thank you @Manoj.
Aarshi said:
8 years ago
Thanks @Ajay.
Bir bahadur singh said:
8 years ago
Suppose a container contains x of liquid from which y units are taken out and replaced by water.
After n operations, the quantity of pure liquid =x(1 -(y-x )power n)) units.
After n operations, the quantity of pure liquid =x(1 -(y-x )power n)) units.
Learner said:
8 years ago
Thanks @MANOJ KUMAR.
Habib Rahman said:
8 years ago
Thanks for explaining the answer.
Tarun kumar said:
8 years ago
Thanks for the given explanation.
Pooja said:
8 years ago
Thanks @Bhargava reddy.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers