Subject
Quantitative Aptitude
Topic
Miscellaneous
A container contained 90 litres of milk. Then 9 litres of milk was replaced by water. The process was repeated twice. The volume of milk in container is
A container contained 90 litres of milk. Then 9 litres of milk was replaced by water. The process was repeated twice. The volume of milk in container is
ক)
72.0 litresখ)
72.9 litresগ)
62.9 litresঘ)
63 litresঙ)
81 litresExplanation
When first 9 litres of milk was replaced by water, then milk left in the container = 90 – 9 = 81 litres ∴ Fraction of milk in the mixture = 81/90 = 9/10 = 0.9 ∴when next 9 litres of mixture was being replaced, amount of milk removed = 0.9 × 9 = 8.1 litres ∴ Milk left in the container = 81 – 8.1 = 72.9 litresRelated questions
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