Two fractions have a common denominator of 8 which of these could be two fractions 1/2 and 2/3 and 1/4 1/2 3/4 and 1/6 or 1/2 and 4/5

Hi

Fractions that have a common denominator of 8, would be fractions that have denominators that, when multiplied, equal 8. 

8/2 = 4
8/3 = 2.7
So the first option is incorrect.

8/4 = 2
8/2 = 4
The second option is correct.

The correct answer is 1/4 and 1/2

Hope this helps! :)