If y > 0, (8y)/20 + (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 4 y / 10 + 3 y / 10 = 7 y / 10 = 70 % answer d"
Answer: D