(3)in section 16, in sub-section (3),-(a)for the words "at such compounded rate not exceeding one per centum", the words "at such compounded rate or rates not exceeding three per centum" shall be substituted;(b)for the words, figure and brackets "in lieu of tax payable under sub-section (2), on all his sales", the words, figure and brackets "in lieu of tax payable under sub-section (2), on all his sales, and for such purpose different rates may be prescribed for different class of dealers" shall be substituted;(c)in the proviso, clause (b) shall be omitted;
