A mixture contains milks and water in the ratio 5 : 1. On adding 5 litres of water the ratio of milk and water becomes 5 : 2. The quantity of milk in the mixture is?
Correct Answer: 25 litres
Explanation:
Let quantity of milk and water be 5x and x litres.
Then, 5x / (x + 5) = 5/2
∴ 10x = 5x + 25
∴ x =5
∴ Quantity of milk = 5x =25 litres