No Service 5:37 PM Monday 8:31 PM Add to Library Questions, Exercises, Problems, and Cases kitchen cabinets and appliances. Supervalu operates grocery stores under numerous brands (including Albertsons, Cub Foods, Jewel-Osco, Shaw's, and Star Market). REQUIRED a. Compute the rate of ROA for each firm. Disaggregate the rate of ROA into profit margin for ROA and assets turnover components. Assume that the income tax rate is 35% for all companies. b. Based on your knowledge of the three retail stores and their respective industry concen- trations, describe the likely reasons for the differences in the profit margins for ROA and assets turnovers. 4.16 Calculating and Interpreting Accounts Receivable Turnover Ratios. Microsoft Corporation (Microsoft) and Oracle Corporation (Oracle) engage in the design, manufacture, and sale of computer software. Microsoft sells and licenses a wide range of systems and application software to businesses, computer hardware manufacturers, and consumer retailers. Oracle sells software for information management almost exclusively to businesses. Exhibit 4.23 presents selected data for the two firms for three recent years. Exhibit 4.23