On january 1, 2017, vahsholtz corporation purchased 5,000 shares of treasury stock. other information regarding vahsholtz corporation is provided as follows. 2017 2016 net income $110,000 $100,000 dividends on preferred stock $30,000 $30,000 dividends on common stock $25,000 $20,000 weighted-average number of common shares outstanding 45,000 50,000 common stockholders’ equity beginning of year $750,000 $600,000 common stockholders’ equity end of year $830,000 $750,000 (a) compute return on common stockholders’ equity for each year. (round answers to 1 decimal place, e. g. 15.2.) 2016 2017 return on common stockholders' equity