If c is 20% of a and 10% of b, what percent of a is b?
Choose the correct option
A) 2.5% B) 15% C) 25% D) 35% E) 200%
Answer = 200%   20a/100 = 10b/100   b = 20a/10 = 200a/100 = 200%
<result>E</result>
If c is 20% of a and 10% of b, what percent of a is b?