Multiple choice

A milkman sells milk at cost price, but he mixes water into it and thus gains 9.09%. The quantity of water in 1 litre of the mixture is

  1. 83.33 mL

  2. 90.90 mL

  3. 90.09 mL

  4. None of these
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A Correct answer
Explanation

A gain of 9.09% is equivalent to a fraction of 1/11, meaning the ratio of water to milk in the mixture is 1:11. In a 1-liter (1000 mL) mixture, the quantity of water is 1/12 of the total volume. Calculating 1000 / 12 gives approximately 83.33 mL.

AI explanation

A gain of 9.09% is equivalent to a fraction of 1/11, meaning the water added is 1 part for every 11 parts of milk. In a 1 litre mixture, which is 1000 mL, the volume of water is (1/12)*1000 = 83.33 mL.

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