The following selected data were taken from the financial statements of the Sigemund Group Inc. for December 31, 2010, 2009, and 2008.
December 31
2010 2009 2008
Total assets $3,000,000 $2,700,000 $2,400,000
Notes payable (10% interest) 1,000,000 1,000,000 1,000,000
Common stock 400,000 400,000 400,000
Preferred $6 stock, $100 par
(no change during year) 200,000 200,000 200,000
Retained Earnings 1,126,000 896,000 600,000

The 2010 net income was $242,000 and the 2009 net income was $308,000. No dividends on common stock were declared between 200 and 2010.
a. Determine the rate earned on total asset, the rate earned on stockholder's equity and the rate earned on common stockholders' equity for the years 2009 and 2010.