If 20% of a = b, then b% of 20 is the same as:  Select the correct option
A) 4% of a  B) 25% of a  C) 20% of a  D) 5% of a  E) 13% of a
20% of a = b   =&gt; b = 20/100a   b% of 20 = (b/100)20 = [(20/100a)/100]20   = (20 × 20 × a)/(100 × 100)   = 4a/100 = 4% of a   4% of a
<result>A</result>
If 20% of a = b, then b% of 20 is the same as: