Answer:
5.625 inches
Explanation:
We Know
A 6-inch candle burns down in 8 hours.
6 / 8 = 0.75 inches burn down per hour
So, we know 0.75 inches burn down per hour
How far has it burned after 7 1/2 hours?
We take
0.75 x 7.5 = 5.625 inches
So, it burned 5.625 inches after 7 1/2 hours.