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18 May, 18:54

The cost of a candle varies directly with the volume of the candle. If a candle with a volume of 80 cm³ costs $12, what would be the cost of a candle with a volume of 120 cm³?

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  1. 18 May, 22:20
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    If c represents that cost, then

    ... 12/80 = c/120

    ... c = 120 * (12/80) = 18

    The cost of the larger candle is $18.
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