Answer:
11/24
Step-by-step explanation:
You have to add 1/3 and 1/8 together to solve this problem. To do this make 1/3 and 1/8 have a common denominator of 24.
Multiply 1/3 by 8/8 and 1/8 by 3/3.
Now add these two fractions together.
8/24 + 3/24 = 11/24
Since this fraction cannot be simplified further, Trevor has 11/24 of a baseball card collection.