which of the following is a rational number between 8 and 8 1/2?

One rational number that is between 8 and 8 1/2 is 8 1/4.

To find a rational number between 8 and 8 1/2, we can simply take the average of these two numbers.

8 + 8 1/2 = 16 + 4/2 + 1/2 = 16 + 5/2 = 16 + 2 1/2 = 18 1/2

Therefore, the rational number between 8 and 8 1/2 is 18 1/2.