A candle is 6.5 inches tall. The candle is lit and burns for a few hours. The height of the candle after the flame is blown out is 2.25 inches. The difference between the candle's two heights is

Relation of 12 inch candle height h with time t hours is :

h = 12 - 0.5t

Also, for 18 inch candle :

h = 18 - 2t

Let, after x hours height is same.

So,

So, after 4 hours height of the candles will be same.

Hence, this is the required solution.

Step-by-step explanation:

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step-by-step explanation:

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