21. If a stock's price is $20 at the beginning of a year and S17 at the end of the year and it pays a dividend of S2 during the year, then the stock's current yield ispercent. 22. If a stock's price is $20 at the beginning of a year and $17 at the end of the year, and it pays a dividend of $2 during the year, then the stock's capital gain is percent