Multiple choice

60 litres of mixture, the ratio of milk and water is 3 : 7 if the ratio of milk and water is to be made 2 : 5 then the amount of water further added is -

  1. 5 ltr.

  2. 2.5 ltr.

  3. 2 ltr.

  4. 3 ltr.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Initial mixture: 60L with milk:water = 3:7, so milk = 18L, water = 42L. After adding x liters of water, total water = 42+x L. New ratio milk:water = 2:5, so 18/(42+x) = 2/5. Cross-multiplying: 90 = 84 + 2x, so 2x = 6, and x = 3 liters. Adding 3L water gives 18:45 = 2:5, which satisfies the required ratio.

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