two numbers are respectively 20 % and 25 % more than a third number . the percentage that is first of the second is ?
"explanation : i ii iii 120 125 100 125 - - - - - - - - - - 120 100 - - - - - - - - - - - ? = > 96 % answer is c"
subtract(const_100, multiply(divide(add(20, const_100), add(25, const_100)), const_100))