SSC CGL 2022 PYQ — Question 55

SSC CGL - 01 Dec 2022 - Shift 3 • Quantitative Aptitude • Q55

A container contains 25 liters of milk. From this container, 5 liters of milk is taken out and replaced by water. This process is further repeated two times. How much milk is there in the container now?

Show answer & explanation

Correct answer: D

Explanation

The correct answer is option 4 i.e. 12.8 litre

Given:

A container contains 25 liters of milk. From this container, 5 liters of milk is taken out and replaced by water. 

Concept used:

Left Quantity = Initial Quantity(1 - [Fraction removed])N (Where N = Number of times the process is carried out)

Calculation:

Fraction of milk removed = 5/25 = 1/5

Now, the quantity of milk left in the container

⇒ 25(1 - 1/5)3

⇒ 25 × (4/5)3

⇒ 25 × 64/125

⇒ 12.8 liter

∴ There is 12.8 liter of milk left in the container.