14. Utilize the following figures to calculate: a. The closing book inventory at retail. b. The cost value of this closing book inventory. c. Find the cumulative markup percentage on merchandise handled. Cost Retail Opening inventory $390,500 $1,562,000 Gross purchases $890,000 $3,000,000 Returns to vendors $3.800 $12,000 Freight $3,260 Net sales $517,000 Customer returns $25,000 Markdowns $193,000