Selected financial statement data for Best Buy Co., Inc., The Kroger Co., Nordstrom, Inc., Staples, Inc., and Walgreen Co. is presented in the following table: ($ millions) Best Buy Kroger Nordstrom Staples Walgreen
Sales revenue $40,339 $108,465 $13,506 $22,492 $76,392
Cost of sales 31,292 85,512 8,406 16,691 54,823
Interest expense 90 488 138 49 156
Net income 1,233 1,728 720 135 1,932
Average receivables 1,294 1,191 2,489 1,883 2,925
Average inventories 5,275 5,670 1,632 2,236 6,464
Average PP&E 2,447 17,403 3,145 1,788 12,198
Average total assets 14,635 29,919 8,910 10,744 36,332

Assume a statutory tax rate of 35% for all companies.

Required:
Compute return on assets (ROA) profit margin, (PM) and asset turnover (AT) for each company.