Question

A 15 litres mixture of milk and water comprising 50% milk is mixed with x litres of pure milk. The new mixture comprises 70% milk. What is the value of x?

• A. 15
• B. 10
• C. 16
• D. 22.5

Answer 1

The correct option is B 10

Using method of alligation,
So, the ratio of solution I: solution II is 3:2
Quantity of solution I = 15 litres $\Rightarrow$ solution II = 10 litres