If 30% of (x-y) = 20% of (x+y), then what percent of x is y?	Choose the correct choice from the following.
A) 50.5 %	B) 44.4 %	C) 22.2 %	D) 33.3 %	E) 20 %

Rationale: "30 % of ( x - y ) = 20 % of ( x + y ) 30 / 100 ( x - y ) = 20 / 100 ( x + y ) x = 5 y required percentage = y / x * 100 = y / 5 y * 100 = 20 % answer is e"
Answer: E