From a 64-liter container of pure spirit, 8 liters are removed and replaced by…
2025
From a 64-liter container of pure spirit, 8 liters are removed and replaced by water. This operation is
performed a total of three times. What is the final quantity of spirit remaining in the container?
Answer: D. 42.88 liters — Each replacement leaves 56/64 = 7/8 of the spirit. After three operations, spirit left = 64 x (7/8)^3 = 42.875 liters, approximately 42.88 liters.
- A.
34.34 liters
- B.
36.45 liters
- C.
38.62 liters
- D.
42.88 liters
Attempted by 2 students.
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Correct answer: D
Each replacement leaves 56/64 = 7/8 of the spirit. After three operations, spirit left = 64 x (7/8)^3 = 42.875 liters, approximately 42.88 liters.
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