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Multiple choice

A milkman mixes 5 litres of water in 15 litres of milk. Calculate the concentration of this solution.

  1. 20%

  2. 0.04%

  3. 25%

  4. 30%

  5. 4%

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Concentration = (Volume of solute / Total volume) * 100. Solute = 5L, Total = 5L + 15L = 20L. Concentration = (5/20) * 100 = 25%.

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