"MATH QUESTION OF THE DAY"

The capacity of glass X is 80 percent of the capacity of glass Y. Further, glass X contains 6 ounces of
punch and is half-full, while glass Y is full. Glass Y contains how many more ounces of punch than
glass X?
(A) 1
(B) 3
(C) 6
(D) 9
(E) Not enough information to decide