Mixtures & Alligation · Question 6 · Medium
Mixtures & Alligation question 6
A container holds 40 litres of milk. 4 litres are taken out and replaced with water. This is done once more. How much milk is now in the container?
- 32 litres
- 32.8 litres
- 36 litres
- 32.4 litres
Answer and explanation
Answer: D. 32.4 litres
Explanation: Each operation leaves 36/40 = 0.9 of the milk. After two operations: 40 × 0.9 × 0.9 = 32.4 litres.
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