Multiple choice

In what ratio must water be added to milk to gain 25% by selling it at a cost price?

  1. 3 : 2

  2. 2 : 3

  3. 4 : 1

  4. 1 : 4

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let 1 liter milk cost Rs 1. To gain 25%, selling price = Rs 1.25. If x liters water added to 1 liter milk, total quantity = (1+x) liters sold for Rs 1.25. Cost = Rs 1, profit = Rs 0.25 = 25% of cost. So we must sell (1+x) at Rs 1.25, meaning price per unit = 1.25/(1+x) = 1. Therefore x = 0.25. Ratio water:milk = 0.25:1 = 1:4.

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