Simon Companys year-end balance sheets follow.

At December 31	Current Year	1 Year Ago	2 Years Ago
Assets
Cash	$ 31,600	$ 36,250	$ 37,400
Accounts receivable, net	86,600	63,500	50,000
Merchandise inventory	110,000	83,600	54,500
Prepaid expenses	10,450	9,250	5,200
Plant assets, net	278,000	253,500	230,000
Total assets	$ 516,650	$ 446,100	$ 377,100
Liabilities and Equity
Accounts payable	$ 129,200	$ 72,500	$ 50,200
Long-term notes payable	95,500	98,250	81,800
Common stock, $10 par value	162,000	162,000	162,000
Retained earnings	129,950	113,350	83,100
Total liabilities and equity	$ 516,650	$ 446,100	$ 377,100

The companys income statements for the Current Year and 1 Year Ago, follow.

For Year Ended December 31	Current Year		1 Year Ago
Sales		$ 755,000		$ 640,000
Cost of goods sold	$ 468,100		$ 396,800
Other operating expenses	234,050		153,600
Interest expense	11,300		13,000
Income tax expense	9,350		9,000
Total costs and expenses		722,800		572,400
Net income		$ 32,200		$ 67,600
Earnings per share		$ 1.99		$ 4.17

For both the Current Year and 1 Year Ago, compute the following ratios:

(1-a) Compute profit margin ratio for the current year and one year ago. (1-b) Did profit margin improve or worsen in the Current Year versus 1 Year Ago?

(2) Compute total asset turnover for the current year and one year ago.

(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?