Any council of any city of the first class coterminous with a school district of the first class may authorize the board of education of such school district of the first class to levy a tax imposed upon each separate sale at retail as defined herein within the school district of the first class of ten per cent of the sale price, which tax shall be collected by the vendor from the purchaser, and shall be paid over by the vendor to the Tax Collector as herein provided.
53 P.S. § 16134