 #### Explanation / Important formulas:

Alligation: It is the rule that enables us to find the ratio in which two or more ingredients at the given price must be mixed to produce a mixture of desired price.

Mean Price: The cost of a unit quantity of the mixture is called the mean price.

Rule of Alligation: If two ingredients are mixed, then:

(Quantity of cheaper/Quantity of dearer) = (C.P of dearer – Mean price/Mean price – C.P of cheaper)

We present as under:

• C.P. of a unit quantity of cheaper (c)
• C.P of unit quantity (d)
• Mean price (m)
• (Cheaper quantity) : (Dearer quantity) = (dm) : (m – c)

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

#### Instructions to take Aptitude Test

• Click on start to start taking the test.
• Click on the option (A, B, C or D) to figure out the right answer.
• You can answer multiple times till you get the right answer.
• Once you get the right answer, explanations (if any) for the same will be showcased down.
• On click of list, you get to see total no of questions, no of questions you answered and no of questions pending to answer.
• On click of question number you will go to that particular question.
• On click of END your test will end.
• On click of ‘Get Results’ you will get to see correct answer for each questions.