o points Exercise 9-288 Pronghorn Corporation began operations on January 1, 2017, with a beginning inventory of $30,532 at cost and $50,600 at retail. The following information relates to 2017 Retail Net purchases ($108,200 at cost) Net markups Net markdowns Sales revenue $149,600 10,000 4,900 128,000 Cost Retail Beginning invent ory Net Purchaes Net markups Totals Net markdowns Sales Revenue Ending Inventory at Retail