If y > 0, (2y)/10 + (3y)/10 is what percent of y?	Choose the correct choice from the following answers.
A) 40 %	B) 50 %	C) 60 %	D) 70 %	E) 80 %

Rationale: "can be reduced to y / 5 + 3 y / 10 = 2 y / 5 = 50 % b"
Answer: B