Required information Exercise 6-15A Calculate cost of goods sold, the inventory turnover ratio, and average days in inventory (LO6-2, 6-7) [The following information applies to the questions displayed below.) Lewis Incorporated and Clark Enterprises report the following amounts for the year. Inventory (beginning) Inventory (ending) Purchases Purchase returns Lewis $27,000 21,000 307,200 18,000 Clark $ 53,000 63,000 189,000 63,000