Problem 6 · 2021 Math Kangaroo
Easy
Spatial & Visual Reasoning
spatial-reasoning
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Answer: A — Vase A.
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Hint 1 of 2
Each vase holds the same volume and is the same height, and each gets the same half litre.
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Hint 2 of 2
The water rises highest in the vase that is narrowest near the bottom.
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Approach: compare cross-sections low down
- All vases have equal height and equal total volume (1 litre), and each receives 0.5 litre.
- Where a vase is narrow at the bottom, the same half litre must stack up higher.
- Vase A is the narrowest near its base, so its water level is the highest.
- So the answer is A.
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