Financial data for Windsor, Inc. for last year appear below: Windsor, Inc. Statements of Financial Position Beginning Ending Balance Balance Assets: Cash $ 250,000 $ 260,000 Accounts receivable 120,000 135,000 Inventory 230,000 205,000 Plant and equipment (net) 420,000 380,000 Investment in Pine Company 220,000 250,000 Land (undeveloped) 430,000 430,000 Total assets $1,670,000 $1,660,000 Liabilities and owners' equity: Accounts payable $ 160,000 $ 140,000 Long-term debt 800,000 800,000 Owners' equity 710,000 720,000 Total liabilities and owners' equity $1,670,000 $1,660,000 Windsor, Inc. Income Statement Sales $1,750,000 Less operating expenses 1,470,000 Net operating income 280,000 Less interest and taxes: Interest expense $96,000 Tax expense 70,000 166,000 Net income $ 114,000 The company paid dividends of $104,000 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. b. The Board of Directors of Windsor, Inc. has set a minimum required return of 25%. What was the company's residual income last year