The ballots used when voting upon any such proposed ordinance shall state the substance of the ordinance and shall give the voters the opportunity to vote either “yes” or “no” on the question of adoption. If a majority of the registered voters voting on any such ordinance vote in favor of it, it shall thereupon become an ordinance of the City. Any number of proposed ordinances may be voted upon at the same election but the voter shall be allowed to vote for or against each separately. In case of inconsistency between two initiated ordinances approved at one election, the one approved by the higher percentage of registered voters voting on the question shall prevail to the extent of the inconsistency.