Multiple choice

A container contains 120 kg of milk. From this container, 12 kg of milk was taken out and replaced with water. This process was further repeated for two more times. How much milk is now there in the container?

  1. 87.96 kg

  2. 88.18 kg

  3. 87.48 kg

  4. 89.96 kg

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

Each replacement keeps 108 kg out of 120 kg (since 12 kg is removed). This is a factor of 108/120 = 0.9. After 3 replacements: 120 × 0.9³ = 120 × 0.729 = 87.48 kg. The milk remaining after each dilution follows the compound decrease formula.

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