Ahl Enterprise lists the following data for 2009 and 2008:

 

2009

2008

Net income

52,500

40,000

Net sales

1,050,000

1,000,000

Average total assets

230,000

200,000

Average common equity

170,000

160,000

Required

Calculate the net profit margin, return on assets, total asset turnover, and return on common equity for both years. Comment on the results. (For return on assets and total asset turnover, use end of year total assets; for return on common equity, use end of year common equity.)