(a) When bonds are to be issued for more than one (1) purpose the principal amount of bonds applicable to each purpose shall be stated on the ballot as a separate question and no bonds shall be issued for such purpose unless a majority of the electors voting on each separate question shall have approved the issuance of bonds for such purpose.
(b) Bonds that are approved by the electors for more than one (1) purpose may be combined into a single issue.