I dont know if you know this, but there are 3 different 3's. So how can we figure out the question if we don't know which one is underlined?
Answer:
StartFraction 1.55 over 1 EndFraction = StartFraction x over 3.5 EndFraction
Step-by-step explanation:

5 5/16 is greater.
You can find that out by dividing 5/16 and 7/24
So that gives .31 and .29
Thus, 5 5/16 are greater