Question

Sandhu lights a candle at 6 pm. It is 30 cm high. At 7pm, the candle is 27 cm high. At 8pm, it is 24cm high. a) How many cm does the candle burn down every hour? b) How high is the candle at 11 pm?

Answer 1

Every hour, the candle burns down 3 cm. Why? Well, as time passes by, we can subtract 3 from the height of the candle to find the amount of centimeters of which the candle burned down. We can find how high the candle is at 11 pm by continuing the process of subtracting 3 cm for every hour that passes by. At 9 pm, the candle would be 21 cm. At 10 pm, the candle would be 18 cm. This means that at 11 pm, the candle would be 15 centimeters because 18 - 3 = 15. Bonus fact: By midnight, the candle would be 12 centimeters of height.

Your final answer: A) The candle burns down 3 centimeters every hour. B) At 11 pm, the candle is 15 centimeters high.