the salary of a person was reduced by 50 % . by what percent should his reduced salary be raised so as to bring it at par with his original salary ?
"let the original salary be $ 100 new salary = $ 50 increase on 50 = 50 increase on 100 = 50 / 50 * 100 = 100 % ( approximately ) answer is e"
multiply(divide(multiply(const_100, divide(50, const_100)), subtract(const_100, multiply(const_100, divide(50, const_100)))), const_100)