P 8-7 Selected financial data for Squid Company are as follows: 2011 2010 2009 Summary of operations: Net sales Cost of products sold Selling, administrative, and general expenses Nonoperating income Interest expense $1,002,100 520,500 170,200 9,192 14,620 287,588 116,473 171,115 $980,500 514,762 167,665 8,860 12,100 277,113 113,616 163,497 $900,000 477,000 155,700 6,500 11,250 249,550 105,560 143,990 Earnings before income taxes Provision for income taxes Net earnings Financial information: Working capital Average property, plant, and equipment Average total assets Average long-term debt Average stockholders' equity $ 190,400 302,500 839,000 120,000 406,000 $189,000 281,000 770,000 112,000 369,500 $180,000 173,000 765,000 101,000 342,000 Required a. Compute the following for 2011, 2010, and 2009: 1. Net profit margin 2. Return on assets 3. Total asset turnover 4. DuPont analysis 5. Return on investment 6. Return on total equity 7. Sales to fixed assets b. Discuss your findings in (a).