Any amendment or amendments to this Charter may be proposed in the City Council, and, if the same shall be agreed to by a majority of all the members thereof, such proposed amendment or amendments shall be submitted to the electors of the City for their ratification, at the next state or municipal general election, which shall be at least 60 days after the adoption of such proposed amendment or amendments to the city Council; and if at such election any such amendment shall be ratified by a majority of all the qualified electors voting thereon, the same shall thereby become a part of this Charter, and be in full force and effect, and be published in the City official newspaper within 10 days after the official canvass of the ballots pursuant to law: Provided; That if more than one amendment be submitted at the same election, the same shall be submitted in such manner that each proposed amendment may be voted on separately without prejudice to others.