CUMULATIVE MARKUP PROBLEM: 3. On September 1, a women's department has an opening inventory of $700,000 at a retail markup of 56%. On December 31, the new purchases season-to-date amounted to 6,000,000 at retail with a markup of 57.8%. Find the cumulative markup percentage achieved. COST RETAIL MU% Opening Inventory $ + Purchases STD $ Total Merchandise Handled