A company reports the following: Net income $280,000 Preferred dividends 11,200 Average stockholders' equity 2,434,783 Average common stockholders' equity 1,227,397 Determine (a) the the return on stockholders equity and (b) the return on common stockholders equity. If required, round your percentages to one decimal place. a. The rate earned on stockholders' equity fill in the blank 1 % b. The rate earned on common stockholders' equity fill in the blank 2 %