$ millions Jan. 31, 2016 Feb. 01, 2015 Operating assets... Nonoperating assets.. Total assets. ..... Operating liabilities. .. Nonoperating liabilities... Total liabilities. Total stockholders' equity . . $40,333 $38,223 ... 2,216 1,723 .42,549 39,946 . 14,918 13,427 21,315 17,197 . 36,233 30,624 .6,316 9,322 Sales..... Net operating profit before tax (NOPBT). Nonoperating expense before tax... Tax expense Net income... 88,519 11,774 753 4,012 . 7,009 LO2,3 M3-19. Apply DuPont Disaggregation of ROE E DEPOT Refer to the balance sheet and income statement information for Home Depot, from M3-18. HD) I a.Compute ROE and disaggregate the ratio into its DuPont components of ROA and financial leverage. SBC b.Disaggregate ROA into profitability and productivity components