Multiple choice

In a mixture of milk and water milk is found to be 28\%. When 16 litre water is added in the mixture new percentage of milk in mixture becomes 20\%. Find the initial quantity of mixture.

  1. 42 litre

  2. 48 litre

  3. 36 litre

  4. 40 litre

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let initial mixture be M litres. Milk = 0.28M. After adding 16L water, total = M + 16. Milk percentage becomes: 0.28M/(M + 16) = 0.20. Solving: 0.28M = 0.20M + 3.2, 0.08M = 3.2, M = 40. Initial mixture was 40 litres.

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