This Charter, or any part of it, may be amended by submission of the question to the electors at a general municipal election if one shall occur not less than sixty (60) nor more than one hundred and twenty (120) days after passage of an ordinance providing for the submission; otherwise it shall be at a special election to be called and held within the time aforesaid. Amendments to this Charter shall be as provided by this Charter, so long as not otherwise prohibited by the Constitution of Ohio, and as provided by the Constitution of Ohio. If any proposed amendment is approved by a majority of the electors voting, it shall become part of this Charter, except that if two (2) or more inconsistent proposed amendments on the same subject are submitted at the same election, only the one (1) receiving the highest number of affirmative votes, but not less than a majority, shall become part of this Charter.