Alocal ice cream parlor has 31 flavors, but myra is only allowed to eat the flavors without peanuts. if 11 of the flavors have peanuts, what percentage of the ice creams can myra eat?

How to do this , and can some one explain

Answer pls man im trying to get out of summer school

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?