Problem 1 · 2023 Math Kangaroo
Easy
Logic & Word Problems
spatial-reasoning
Five children each light a candle at the same time. Lisa blows out the candles at different times. Now they look as shown in the picture. Which candle did Lisa blow out first?
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Answer: D — D
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Hint 1 of 2
A candle that was blown out earlier has had more time to burn down, so it is shorter now.
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Hint 2 of 2
Find the shortest candle — that is the one extinguished first.
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Approach: compare burn lengths: longest burning means shortest now
- All five candles were lit at the same moment.
- The one blown out first kept burning the longest, so it is the shortest stub in the picture.
- The shortest candle is the one labelled D.
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