The salary of a person was reduced by 20%. By what percent should his reduced salary be raised so as to bring it at par with his original salary? Choose the correct choice
A) 50 %	B) 32 %	C) 25 %	D) 43 %	E) 29 %

Rationale: "let the original salary be $ 100 new salary = $ 80 increase on 80 = 20 increase on 100 = 20 / 80 * 100 = 25 % answer is c"
Answer: C