Multiple choice

A 64 litre mixture contains water and milk in the ratio 3 : 5. How much water must be added to this mixture to make the ratio 1 : 1?

  1. 12 litres

  2. 20 litres

  3. 24 litres

  4. 16 litres

  5. 14 litres
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D Correct answer
Explanation

Initial mixture is 64 litres with ratio 3:5 (24 water, 40 milk). To make the ratio 1:1, the amount of water must equal the amount of milk (40 litres). Adding 16 litres of water (40 - 24) achieves this.

AI explanation

The initial 64-litre mixture has a water to milk ratio of 3 to 5, meaning the volumes are 24 litres of water (calculated as 3/8 of 64) and 40 litres of milk (calculated as 5/8 of 64). To achieve a 1 to 1 ratio, the final volume of water must equal the 40 litres of milk. Therefore, you must add 16 litres of water to the initial 24 litres of water.

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