Multiple choice

In 120 liter mixture milk is 75%. How many liter water should be added so that milk may became 60%.

  1. 30 liter

  2. 60 liter

  3. 45 liter

  4. 120 liter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Initial milk = 75% of 120L = 90L. After adding x liters water, milk becomes 60%: 90/(120+x) = 0.6. Solving: 90 = 72 + 0.6x, so 0.6x = 18, x = 30 liters.

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