The income statement of Walmart reports net sales of $495,761 million and cost of goods sold of $373,396 million for the year ended January 31,2018 . The comparable sales and cost of goods sold figures for the year ended one year earlier were $481,317 million and $361,256 million, respectively. As you would expect, to be able to achieve this high level of sales, a great deal of inventory must be maintained so that customers will find what they want to buy when they shop in Walmart stores. In fact, in the January 31,2018 , balance sheet, inventory is presented at $43,783 million and the comparable figure for a year earlier is $43,046 million. a. Using the year-end inventory figures, compute the inventory turnover for Walmart for both years. b. Compute the average number of days required by Walmart to sell its inventory for the same years. c. In which year was the company more efficient in its management of inventory