If 60% of (x-y) = 20% of (x+y), then what percent of x is y?  Choose one:
A) 50 %  B) 44.4 %  C) 22.2 %  D) 33.3 %  E) 25 %

Rationale: "60 % of ( x - y ) = 20 % of ( x + y ) 60 / 100 ( x - y ) = 20 / 100 ( x + y ) 4 x = 8 y required percentage = y / x * 100 = 4 y / 8 y * 100 = 50 % answer is a"
Answer: A