An investor buys 300 shares of stock selling at $73 per share using a margin of 64%. The stock pays annual dividends of $3.00 per share. A margin loan can be obtained at an annual interest cost of 3.9%. Determine what return on invested capital the investor will realize if the price of the stock increases to $81 within six months. What is the annualized rate of return on this transaction? If the price of the stock increases to $81 within six months, the six-month return on this transaction is \%. (Round to two decimal places.)