In addition to the rate of one-half of one percent of the selling price or value of the article used imposed under Section 3.48.010 of this chapter, the rate of the tax imposed by Section 3.48.010 shall be increased by an additional rate of one-half of one percent of the selling price or value of the article used, as the case may be. (Ord. 861-82 § 1, 1982.)