Question

A 9-inch candle burns down in 12 hours. At what rate does the candle burn, in inches per hour?

(Pls help)
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Answer 1

Answer: 4.5 hours.

Explanation:

Use a proportion.

3 3/8 = 3.375

9 inch is to 12 hours as 3.75 inches is to x hours.

9/12 = 3.375/x

3/4 = 3.375/x

3x = 4 * 3.375

x = 4 * 1.125

x = 4.5

Answer: 4.5 hours

Answer 2

Answer: 0.75 inches per hour

Explanation:

9/12=0.75
0.75 x 12 = 9
0.75 inches per hour