Multiple choice

A 20-litre mixture contains 40% alcohol and rest is water. If 5 litres of water is added to it, the percentage of alcohol in the new mixture will be

  1. 32%

  2. 22%

  3. 26%

  4. 30%

  5. None of these
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A Correct answer
Explanation

Initial mixture: 20L, 40% alcohol = 8L alcohol, 12L water. Add 5L water: New total = 25L, alcohol = 8L. Percentage = (8/25) * 100 = 32%.

AI explanation

The original mixture contains 40 percent of 20 litres, which is 8 litres of alcohol. After adding 5 litres of water, the total volume becomes 25 litres. The new percentage of alcohol is 8 divided by 25 times 100, which equals 32 percent.

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