[The following information applies to the questions displayed below.] Simon Company's year-end balance sheets follow. 2017 2016 2015 At December 31 Assets Cash Accounts receivable, net Merchandise inventory Prepaid expenses Plant assets, net Total assets Liabilities and Equity Accounts payable Long-term notes payable secured by mortgages on plant assets Common stock, $10 par value Retained earnings Total liabilities and equity $ 30,400 $ 35,250 $ 37,200 89,800 62,500 50,000 110,500 80,400 53,500 10,850 9,350 4,200 277,000 255,000 226,000 $518,550 $442,500 $ 370,900 $129,600 $ 73,250 $ 51,000 96,000 99,000 81,000 160,500 160,500 160,500 132,450 109,750 78,400 $518,550 $442,500 $ 370,900 The company's income statements for the years ended December 31, 2017 and 2016, follow. For Year Ended December 31 Sales Cost of goods sold Other operating expenses Interest expense Income taxes Total costs and expenses Net income Earnings per share 2017 $ 725,000 $ 442,250 217,500 12,100 9,500 681, 350 $ 43,650 2016 $ 570,000 $ 359,100 136,800 13,000 8,650 517,550 $ 52,450 $ 2.72 $ 3.27 Evaluate the company's efficiency and profitability by computing the following for 2017 and 2016. (1) Profit margin ratio. (2) Total asset turnover. (3) Return on total assets