Quantitative Aptitude – Alligation or Mixture
Alligation or Mixture is an important chapter for competitive exams. Questions are often comes from this topic. Questions of this chapter are not so hard to solve. It just need a very good learning and practice of this topic.
To understand the concept of Alligation or Mixture, you need to learn the basic idea and formulas of this chapter. So, Now we will discuss the basic concept of Alligation or Mixture.
What is Alligation ?
Definition: Alligation helps us to find out the ratio in which two or more ingredients are mixed together to become a mixture of desired price.
So, Let’s explain this,
Suppose, we want to mix water and milk together. Price of 1 liter water is Rs.10 and price of 1 liter milk is Rs.40. Now we need to mix these two ingredients in such a ratio that we can get 1 liter of mixture at Rs.25. This is the basic concept of Alligation.
Types of Alligation
Alligation is basically of two types.
- Alligation Medial
- Alligation Alternate
What is Mean Price ?
Definition: Mean price is the cost of a unit quantity of the mixture.
So, we can say that the average price of a mixture is a mean price.
Rule of Alligation
If two ingredients are mixes, then
∴ (Cheaper quantity) : (Dearer quantity) = (D – M) : (M – C)
Finally, 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)}n ] units.
So, this is the basic idea of Alligation and Mixture chapter. Now, if you have any questions in your mind then please feel free to ask us here in www.AptitudeTricks.com. Our team member will respond to your questions later.