Selected comparative statement data for Navin Products Company are presented on the next page. All balance sheet data are as of December 31.

InstructionsCompute the following ratios for 2013.(a) Profit margin.(b) Asset turnover.(c) Return on assets.(d) Return on common stockholders'equity.

2013 2012 Net sales Cost of goods sold Interest expense Net income Accounts receivable $720,000 $760.000 5,000 42.000 100,000 75,000 500,000 325,000 7.000 50.000 120,000 Inventory 85,000 580.000 430,000 Total assets Total common stockholders' equity