The salary of a person was reduced by 28%. By what percent should his reduced salary be raised so as to bring it at par with his original salary?  Choose the correct option:
A) 10%
B) 15%
C) 20%
D) 25%
E) 38.9%
Let the original salary be $100   new salary = $72   increase on 72 = 28   increase on 100 = [(28/72)100]% = 38.9%   Answer is 38.9%
<result>E</result>
The salary of a person was reduced by 28%. By what percent should his reduced salary be raised so as to bring it at par with his original salary?