a candidate got 30 % of the votes polled and he lost to his rival by 4000 votes . how many votes were cast ?
"30 % - - - - - - - - - - - l 70 % - - - - - - - - - - - w - - - - - - - - - - - - - - - - - - 40 % - - - - - - - - - - 4000 100 % - - - - - - - - - ? = > 10000 answer : d"
divide(4000, subtract(subtract(const_1, divide(30, const_100)), divide(30, const_100)))