a candidate got 40 % of the votes polled and he lost to his rival by 2000 votes . how many votes were cast ?
"40 % - - - - - - - - - - - l 60 % - - - - - - - - - - - w - - - - - - - - - - - - - - - - - - 20 % - - - - - - - - - - 2000 100 % - - - - - - - - - ? = > 10000 answer : a"
divide(2000, subtract(subtract(const_1, divide(40, const_100)), divide(40, const_100)))