Costco Wholesale Corporation, together with its subsidiaries, operates membership warehouses in the United States, Puerto Rico, Canada, the United Kingdom, Mexico, Japan, Korea, Australia, Spain, France, Iceland, China, and Taiwan. It offers branded and private-label products in a range of merchandise categories. The company's latest financials indicate sales of $1,988,300, cost of goods sold of $869,500, and inventory of $200,100. Required: Compute how long on average does it take the firm to sell its inventory? Assume that the industry average is 40 days, is this a strength or a weakness for Costco? Discuss.