Final answer:
Two-thirds (2/3) of the class prefers either apples or bananas, assuming there are no students who prefer both.
Step-by-step explanation:
If 1/3 of Ryan's class prefers apples and another 1/3 prefers bananas, we simply add the two fractions to find the total part of the class that prefers either apples or bananas. Since both fractions are the same, we can combine them to get:
1/3 + 1/3 = 2/3
So, 2/3 of the class prefers apples or bananas. This is assuming that there is no overlap in preferences, meaning no one prefers both apples and bananas.