A 36-litre mixture contains milk and water in the ratio 5 : 1. How many litres of water must be added to make the ratio 1 : 1?

💡 Solution & Explanation

Milk = 36 × 5/6 = 30 litres and water = 6 litres. Adding water does not change the milk. For milk : water = 1 : 1, the water must be 30 × 1/1 = 30 litres. So add 30 − 6 = 24 litres of water.