Answer:
Isaac finished 2 more questions.
Explanation:
If Isaac finished 8 out of 10 (8/10), and Phil finished (3/5), we can figure out who finished more by finding the common denominator of the two numbers.
To find the common denominator, we can see that to get to 10 we need to multiply 5 x 2. So multiply 3/5 by 2/2 to get 6/10.
Now compare 8/10 to 6/10. We can see that Isaac finished 2 more questions than Phil because 8 - 6 = 2.