If 40% of (x-y) = 20% of (x+y), then what percent of x is y?
Choose the correct choice from the following options
A) 50.5 %
B) 44.4 %
C) 22.2 %
D) 33.3 %
E) 25 %

Rationale: "40 % of ( x - y ) = 20 % of ( x + y ) 40 / 100 ( x - y ) = 20 / 100 ( x + y ) x = 3 y required percentage = y / x * 100 = y / 3 y * 100 = 33.3 % answer is d"
Answer: D