If 20% of a = b, then b% of 20 is the same as:	Choose the most appropriate option.
A) None of these  B) 10% of a  C) 4% of a  D) 20% of a  E) None of these
Explanation :   20% of a = b   ⇒b=20/100a   b% of 20 = (b/100)20 = (20/100a) /100X20=20×20×a/100×100 = (4a/100) = 4% of a   Answer : Option 4% of a
<result>C</result>
If 20% of a = b, then b% of 20 is the same as: