14. Utilize the following figures to calculate: a. The closing book inventory at retail. b. The cost value of this closing book inventory. c. The cumulative markup percentage on merchandise handled. Cost $390,500 Retail $1,562,000 $3,000,000 $12,000 Opening inventory Gross purchases Returns to vendors Freight Net sales $890,000 $3,800 $3,260 Customer returns $517,000 $25,000 $193,000 Markdowns