Financial data for Windsor, Inc. for last year appear below: Ending Balance Windsor, Inc. Statements of Financial Position Beginning Balance Assets: Cash $ 290,000 Accounts receivable 209,000 Inventory 282,000 Plant and equipment (net) 430,000 Investment in Pine Company 304,000 Land (undeveloped) 241,000 $ 451,280 193,000 232,000 393,000 255,000 241,000 Total assets $1,756,000 $1,765,280 $ Liabilities and owners' equity: Accounts payable Long-term debt Owners' equity $ 208,000 824,000 724,000 175,000 824,000 766,280 Total liabilities and owners' equity $1,756,000 $1,765,280 Windsor, Inc. Income statement Sales $1,960,000 1,519,000 Less operating expenses 441,000 Net operating income Less interest and taxes: Interest expense $103,600 Tax expense 141,120 244,720 Net income $ 196,280 The company paid dividends of $154,000 last year. The "Investment in Pine Company" on the statement of financial position represents an investment in the stock of another company. Required: a. Compute the company's margin, turnover, and return on investment for last year. (Round your intermediate calculations and final answers to 2 decimal places. Omit the "%" sign in your response.) Margin Turnover Return on investment b. The Board of Directors of Windsor, Inc. has set a minimum required return of 30%. What was the company's residual income last year? (Round your intermediate calculations and final answers to 2 decimal places. Omit the "$" sign in your response.) Residual income $O