On January 1, 2020, Larkspur, Inc. purchased 1,600 shares of treasury stock. Other information regarding Larkspur, Inc. is provided as follows. Net income Dividends on preferred stock Dividends on common stock Weighted average number of common shares outstanding Common stockholders' equity beginning of year Common stockholders' equity end of year 2019 2020 $195,000 $210,000 $ 33,000 $ 33,000 $ 19,000 $25,000 11,000 9,400 $598,000 $746,000 $746,000 $821,000 (a) Compute return on common stockholders' equity for each year. (Round return on common stockholders'to 1 decimal place, es. 10.5.) 2019 2020 Return on common stockholders'equity % %