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Elio makes candles that are 14 cm tall. Each candle burns 8 hours before going out. He is wondering how many hours at 21 cm tall candle will burn. How long will a 21 cm tall can…

Elio makes candles that are 14 cm tall. Each candle burns 8 hours before going out. He is wondering how many hours at 21 cm tall candle will burn. How long will a 21 cm tall can…
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Elio makes candles that are 14 cm tall. Each candle burns 8 hours before going out. He is wondering how many hours at 21 cm tall candle will burn. How long will a 21 cm tall candle burn?

User Louis Kriek
by
7.9k points

2 Answers

4 votes

The answer is 12 hours. I got it right on my Khan Academy.

User Jeffery Thomas
by
8.3k points
2 votes
I would use ratio.
14:8 divide 2
7:4 times 3
21:12
12 hours before going out.
User LumberHack
by
9.1k points
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