cannot find return on total assets, please help

Ret Comparative financial statements for Weller Corporation, a merchandising company, for the year ending December 31 appear below. The company did not Issue any new common stock during the year. A total of 850,000 shares of common stock were outstanding. The interest rate on the bond payable was 12%, the income tax rate was 40%, and the dividend per share of common stock was $0.75 last year and $0.40 this year. The market value of the company's common stock at the end of the year was $20. All of the company's sales are on account Weller Corporation Comparative Balance sheet (dollars in thousanda) This Year Last Year $ 1,810 12,800 9,950 1,850 26,410 $ 710 10,000 8,400 2,200 21,310 Assets Current assets Canh Accounts receivable, net Inventory Prepaid expenses Total current assets Property and equipment Land Muildings and equipment, net Total property and equipment Total assets Liabilities and Stockholders' Equity Current liabilities Accounts payable Accrued liabilities Notes payable, short term Total current liabilities Long-term liabilitient Bonds payable Total liabilities stockholders' equity 6.500 19,700 26,200 $52,610 6,500 19,500 26.000 $47,310 $10,000 700 350 11,050 $ 8,550 950 350 9,850 5,000 16.050 5.000 14,850 Common stock Additional paid-in capital Total paid-in capital Retained earnings Total stockholders' equity Total liabilities and stockholders' equity 850 4,450 5,300 31,260 36,560 $52,610 850 4,450 5,300 27,160 32,460 $ 47,310 Weller Corporation Comparative Income Statement and Reconciliation (dollars in thousands) This Year Last Year Sales $84,000 $79,000 Cost of goods sold 54,500 50,500 Gross margin 29,500 28,500 Selling and administrative expenses : Selling expenses 9,000 8,500 Administrative expenses 12,500 11,500 Total selling and administrative expenses 21,500 20,000 Net operating income 8,000 8,500 Interest expense 600 600 Net income before taxes 7,400 7,900 Income taxes 2,960 3,160 Net income 4,440 4,740 Dividends to common stockholders 680 Net income added to retained earnings 4,100 4,060 Beginning retained earnings 27,160 23, 100 Ending retained earnings $31,260 $27,160 340 Required: Compute the following financial data for this year: 1. Gross margin percentage. (Round your percentage answer to 1 decimal place (i. 2. Net profit margin percentage. (Round your percentage answer to 1 decimal plac 3. Return on total assets. (Round your percentage answer to 1 decimal place (l.e., 4. Return on equity. (Round your percentage answer to 2 decimal places (.e., 0.123 Answer is complete but not entirely correct. 1. Gross margin percentage Net profit margin percentage 2. 35.1 % 5.3% 18.6 X % 3. Return on total assets 4. Return on equity 12.87 %