In its closing financial statements for its first year in business, the Runs and Goses Company, had cash of $242, accounts receivable of $850, inventory of $820, net fixed assets of $3,408, accounts payable of $700, short-term notes payable of $740, long-term liabilities of $1,100, common stock of $1,160, retained earnings of $1,620, net sales of $2,768, cost of goods sold of $1,210, depreciation of $360, interest expense of $160, taxes of $312, addition to retained earnings of $508, and dividends paid of $218. Calculate:

a. Return on equity =
b. Return on total assets =
c. Gross profit margin =
d. Net profit margin =