Multiple choice

In a mixture of 100 litres of milk and water, 25% of the mixture is milk. How much water should beadded to the mixture so that milk becomes 20% of the mixture?

  1. 25 litres

  2. 15 litres

  3. 20 litres

  4. 24 litres
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A Correct answer
Explanation

Initial: 25L milk, 75L water. We add water, so milk remains 25L. New mixture: 25L is 20% of total. Total = 25 / 0.2 = 125L. Water added = 125 - 100 = 25L.

AI explanation

Out of 100 liters of the initial mixture, 25% is milk, meaning there are 25 liters of milk. When water is added, the milk quantity remains 25 liters but must become 20% of the new total volume, meaning the new total volume equals 25 divided by 0.20, or 125 liters. The difference between the new total volume and the original volume is 125 minus 100, resulting in 25 liters.

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