Multiple choice

There are 2 bottles containing a mixture of wine, water and alcohol. The first bottle contains wine, water and alcohol in the ratio 3 : 5 : 2. The second bottle contains water and wine in the ratio 5 : 4. 1litre of the first and 2 litres of the second are mixed together. What fraction of the mixture is alcohol?

  1. 1/15 litres

  2. 6/13 litres

  3. 2/15 litres

  4. 6/19 litres
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A Correct answer
Explanation

The first litre contains 2/10 = 1/5 litre of alcohol. The total mixture is 3 litres, so the alcohol fraction is (1/5)/3 = 1/15.

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