If y > 0, (2y)/20 + (3y)/10 is what percent of y?  Select:
A) 40 %
B) 50 %
C) 60 %
D) 70 %
E) 80 %

Rationale: "soln : - can be reduced to y / 10 + 3 y / 10 = 2 y / 5 = 40 % answer : a"
Answer: A