a candidate got 25 % of the votes polled and he lost to his rival by 4000 votes . how many votes were cast ?
"25 % - - - - - - - - - - - l 75 % - - - - - - - - - - - w - - - - - - - - - - - - - - - - - - 50 % - - - - - - - - - - 4000 100 % - - - - - - - - - ? = > 8000 answer : e"
divide(4000, subtract(subtract(const_1, divide(25, const_100)), divide(25, const_100)))