A mixture of a certain quantity of milk with 12 litres of water is worth Rs 1 per litre If pure milk...........

Quantitative Aptitude (CDS) Mixture and Alligation

A mixture of a certain quantity of milk with 12 litres of water is worth Rs. 1 per litre. If pure milk is worth Rs.3 per litre, how much milk is there in the mixture?

24 litres

20 litres

14 litres

None of these

Explanation:

The mean value is Rs.1 and the price of water is Rs.0
By the Alligation rule, milk and water are in the ratio
Milk: Water = 3-1/1-0
= 2:1
Therefore, the quantity of milk in the mixture = 2×12 = 24 litres