An investor buys 200 shares of stock selling at $71 per share using a margin of 70%. The stock pays annual dividends of $1.00 per share. A margin loan can be obtained at an annual interest cost of 6.1%. Determine what return on invested capital the investor will realize if the price of the stock increases to $85 within six months. What is the annualized rate of return on this transaction?

If the price of the stock increases to $85 within six months, the six-month return on this transaction is _____%