Required information [The following information applies to the questions displayed below.] Simon Company's year-end balance sheets follow. At December 31 Assets Cash Accounts receivable, net Merchandise inventory Prepaid expenses Plant assets, net Total assets Liabilities and Equity Current Year 1 Year Ago 2 Years Ago $ 31,600 88,400 111,500 10,850 277,000 $ 35,500 62,000 $ 37,400 82,600 9,500 253,000 $ 519,350 $ 442,600 Accounts payable $ 129,600 $ 73,250 Long-term notes payable Common stock, $10 par value 95,000 161,000 133,750 101,000 161,000 107,350 Total liabilities and equity $ 519,350 $ 442,600 Retained earnings 50,500 55,000 5,000 226,000 $ 373,900 $ 50,400 80,400 161,000 82,100 $ 373,900 The company's income statements for the Current Year and 1 Year Ago, follow. For Year Ended December 31 Sales Cost of goods sold Interest expense 12,000 9,600 Current Year 1 Year Ago $ 715,000 $ 610,000 $ 443,300 Other operating expenses 221,650 Income tax expense $ 378,200 140,300 12,900 8,975 Total costs and expenses Net income 686,550 $ 28,450 540,375 $ 69,625 Earnings per share $ 1.77 $ 4.32 For both the Current Year and 1 Year Ago, compute the following ratios: (3-a) Compute return on total assets for the current year and one year ago. (3-b) Based on return on total assets, did Simon's operating efficiency improve or worsen in the Current Year versus 1 Year Ago