Question
A 50-litre mixture contains milk and water in the ratio
3:2. How much water should be added to make water 80% of the final mixture?Solution
80% water means 20% milk.
Milk = 50 × 3/5 = 30 litres
New mixture = 30 ÷ 0.2 = 150 litres
Water in new mixture = 150 – 30 = 120 litres
Old water = 50 – 30 = 20 litres
Water to be added = 120 – 20 = 100 litres
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