The following selected data were taken from the financial statements of Vidahill Inc. for December 31, 20Y7, 20Y6, and 20Y5: December 31 December 31 December 31 20Y7 20Y6 20Y5 Total assets $170,000 $153,000 $136,000 Notes payable (8% interest) 60,000 60,000 60,000 Common stock 24,000 24,000 24,000 Preferred 4% stock, $100 par (no change during year) 12,000 Retained earnings 69,110 12,000 49,750 12,000 36,000 The 20Y7 net income was $19,840, and the 20Y6 net income was $14,230. No dividends on common stock were declared between 20Y5 and 20Y7. Preferred dividends were declared and paid in full in 20Y6 and 20Y7. a. Determine the return on total assets, the return on stockholders' equity, and the return on common stockholders' equity for the years 20Y6 and 20Y7. When required, round your answers to one decimal place. Return on total assets Return on stockholders' equity Return on common stockholders' equity 20Y7 20Y6 do do do % % % % % %