If c is 25% of a and 15% of b, what percent of a is b?  Choose the correct choice from the following options
A) 2.5% B) 15% C) 25% D) 125% E) 250%
Answer = 125%   25a/100 = 20b/100   b = 25a/20 = 125a/100 = 125%
<result>D</result>
If c is 25% of a and 15% of b, what percent of a is b?