A 80-litre mixture contains milk and water in the ratio 4 : 1. How many litres of water must be added to make the ratio 4 : 3?

💡 Solution & Explanation

Milk = 80 × 4/5 = 64 litres and water = 16 litres. Adding water does not change the milk. For milk : water = 4 : 3, the water must be 64 × 3/4 = 48 litres. So add 48 − 16 = 32 litres of water.