the salary of a person was reduced by 10 % . 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 = $ 90 increase on 90 = 10 increase on 100 = 10 / 90 * 100 = 11 1 / 9 % answer is b"
multiply(divide(multiply(const_100, divide(10, const_100)), subtract(const_100, multiply(const_100, divide(10, const_100)))), const_100)