5. Determine (a) cumulative markup percent, (b) gross cost of merchandise sold, and (c) maintained markup percent, given the following information: Cost ($) Retail ($) Opening inventory 37,840 69,320 Net purchases 16,460 33,730 Freight 910 Net transfers in 230 560 Gross sales 38,140 Customer returns 2,080 Net markdowns 4,060 Employee discounts 930 6. Using the numbers from the previous problem, calculate GMROI. Use an average inventory based on open-ing and estimated physical closing values.