(2) At the election the notice and ballots shall contain a statement of the amount of bonds to be voted on and the purpose for which the bonds are to be used. If a majority of those voting on the question vote "yes," the board of directors is authorized to issue bonds of the character and in the amount designated by the election ballot. [Amended by 1973 c.796 §14; 1975 c.598 §5; 1979 c.558 §26; 1991 c.572 §5]