An investor buys common stock in a firm for $ 1000 . At the end of the first year and every year thereafter , she receives a dividend of $ 100 , which she immediately invests in a savings and loan institution that pays 5 percent inter est compounded annually . At the end of the tenth year , just after receiving her dividend , she sells the stock for $ 1200 . What is the rate of interest ( on an annual compounding basis ) yielded by this investment program