Question
A 60-litre mixture of milk and water is in the ratio
3:2. How much water should be added to make water 70% of the new mixture?Solution
70% water means 30% milk.
Current quantity of milk = 60 × 3/5 = 36 litres
New mixture = 36 ÷ 0.3 = 120 litres
Water in new mixture = 120 – 36 = 84 litres
Water in old mixture = 60 – 36 = 24 litres
Water to be added = 84 – 24 = 60 litres
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