Multiple choice

A vessel contains 120 litres of a mixture of milk and water in the ratio 11 : 4, respectively. 45 litres of this mixture is taken out, and then 5 litres of water is added. What is the percentage of water in the resultant mixture?

  1. 31.75%

  2. 31.25%

  3. 35.65%

  4. 42.15%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Initial: 120L, 11:4 ratio. Milk = 88L, Water = 32L. Remove 45L: Milk removed = 45 * 11/15 = 33L, Water removed = 45 * 4/15 = 12L. Remaining: Milk = 55L, Water = 20L. Add 5L water: Water = 25L, Total = 80L. Percentage water = 25/80 = 31.25%.

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