just need help with number 3

Comparative financial statements for Weller Corporation, a merchandising company, for the year ending December sidppean wing. Th The company did not issue any new common stock during the year. A total of 840,000 shares of common stock were outstanding. The year and $0.40 this year. The market value of the company's common stock at the end of this year was $20. All of the company's sale are on account. Required: Compute the following financial data for this year: 1. Gross margin percentage. (Round your percentage answer to 1 decimal place (i.e., 0.1234 should be entered as 1 . 2. Net profit margin percentage. (Round your percentage answer to 1 decimal place (i.e., 0.1234 should be entered 3. Return on total assets. (Round your percentage answer to 1 decimal place (i.e., 0.1234 should be entered as 12.3 ) 4. Return on equity. (Round your percentage answer to 2 decimal places (i.e., 0.1234 should be entered as 12.34 ).)