Selected comparative statement data for the giant bookseller Barnes & Noble are presented here. All balance sheet data are as of December 31 (in millions). 2006 2005 Net sales $5,261.3 $5,103.0 Cost of goods sold 3,623.0 3,535.8 Net income 150.5 146.7 Accounts receivable 100.5 99.1 Inventory 1,354.6 1,314.0 Total assets 3,196.8 3,156.3 Total common stockholders' equity 1,164.9 1,115.8 Compute the following ratios for 2006: (Round all answers to 1 decimal place, e.g. 12.5.) Profit margin % Asset turnover times Return on assets % Return on common stockholders' equity % Gross profit rate %