In all cases where the seller of electricity, metered or bottled gas (natural, liquefied petroleum gas, or manufactured), collects the price thereof at monthly periods, the tax levied by this division may be computed on the aggregate amount of purchases during such period, provided that the amount of tax to be collected shall be the nearest whole cent to the amount computed.
(Code 1958, § 26-9; Ord. No. 88-40, § 3, 9-7-88)