Simon Company's year-end balance sheets follow, Current Year 1 Year Ago 2. Years Ago 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 Common stock, 510 par value Retained earnings Total liabilities and equity $ 31,800 89,500 112,500 10,700 278,500 $ 523,000 $ 35,625 62,500 82,500 9,375 255,000 $ 445,000 $ 37,800 50,200 54,000 5,000 230,500 $ 377,500 $ 129,900 98,500 163,500 131, 100 $ 523,000 $ 75,250 101,500 163,500 104,750 $ 445,000 $ 51, 250 83,500 163,500 79, 250 $ 377,500 For both the current year and one year ago, compute the following ratios: The company's income statements for the current year and 1 year ago, follow. For Year Ended December 31 Sales Cost of goods old Other operating expenses Interest expense Income tax expense Total costs and expenses Net income Earnings per share Current Year $ 673,500 $ 411,225 209,550 12.100 9,525 642,400 $ 31,100 $ 1.90 1 Year Ago $ 532,000 $ 345,500 134,980 13,300 8,845 502,625 $ 29,375 $ 1.80 For both the Current Year and 1 Year Ago, compute the following ratios: (1-a) Profit margin ratio (1-b) Did profit margin improve or worsen in the Current Year versus 1 Year Ago? (2) Total asset turnover. (3-a) Return on total assets. (3-b) Based on return on total assets, did Simon's operating efficiency improve or worsen in the Current Year versus 1 Year Ago