Elio makes candles that are 14cm Tall each candle burns eight hours before going out he's wondering how many hours and 21 cm tall handle can burn for. How long can a 21 cm candle burn for?

12 hours

Step-by-step explanation:

If a 14cm-candle burns for 8 hours, the we need to find hpw long it would take a 1cm-long candle to burn, then we can use this to obtain the answer for any length of the candle. Taking it to the unit length (1cm) first, helps to make the solution adaptable to any given length.

S;

14cm candle burns for 8 hours

1cm candle will burn for hours

21cm candle will therefore burn for 21 times longer than the 1cm candle, in this case, we have: 21 × = 12 hours.

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step-by-step explanation: