The financial statements for Castile Products, Inc., are given below: Castile Products, Inc. Balance Sheet December 31 Assets Current assets: Cash $ 24,000 Accounts receivable, net 170.000 Merchandise inventory 320,000 Prepaid expenses 10.000 Total current assets 524.000 Property and equipment, net 910,000 Total assets $1,434.000 Liabilities and Stockholders' Equity Liabilities: Current liabilities $ 270,000 Bonds payable, 9% 330.000 Total liabilities 600.000 Stockholders' equity Common stock, $10 par value $ 170,000 Retained earnings 664,000 Total stockholders' equity 834,000 Total liabilities and stockholders' equity $1.434.000 Castile Products, Inc. Income Statement For the Year Ended December 31 Sales $2,270,000 Cost of goods sold 1,180,000 Gross margin 1,090,000 Selling and administrative expenses 620.000 Net operating income 470,000 Interest expense 29,700 Net income before taxes Income taxes (30%) 440,300 132.090 Net income S 308.210 Account balances at the beginning of the year were: accounts receivable, $180,000; and inventory. $320,000. All sales were on account. Assets at the beginning of the year totaled $1,020,000, and the stockholders' equity totaled $705,000 Required: Compute the following: 1. Gross margin percentage. (Round your percentage answer to 2 decimal places (i.e., 0.1234 should be entered as 12.34).) Gross margin percentage % 2. Net profit margin percentage. (Round your answer to the nearest whole percentage place (i.e., 0.1234 should be entered as 12%).) Net profit margin percentage % 3. Return on total assets. (Round your percentage answer to 1 decimal place (i.e., 0.1234 should be entered as 12.3).) Return on total assets 4. Return on equity. (Round your percentage answer to 1 decimal place (i.e., 0.1234 should be entered as 12.3).) Return on equity %