Upon receiving the proposed ordinance from the committee, the Council shall at once proceed to consider it and shall take final action thereon within thirty (30) days from the date of such committee report. If the Council rejects the proposed ordinance or passes it in a form different from that set forth in the petition, the committee of the petitions may, as hereinafter provided, require that it be submitted to a vote of the electors in its original form, or that it be submitted to a vote of the electors with any proposed change, addition or amendment, which was presented in writing either at a public hearing before the committee to which the proposed ordinance was referred, or during the consideration thereof by the Council.