23 You bought 100 shares of a stock at S52 per share. After 240 days, you decide to sell the stock. By this time, the stock had gone up and was now worth $58.50 per share. You are dealing with a brokerage firm that charges a commission of $49 plus 0.8% of transaction amounts between $2,500 and $9.999. Determine the annual rate of interest you've earned on this investment