George Seby is thinking about doing some speculating in interest rates. He thinks rates will fall and, in response, the price of Treasury bond futures should move from 94-1.1, their present quote, to a level of about 97. Given a required margin deposit of $1,650 per contract, what would George's return on invested capital be if prices behave as he expects? If prices behave as he expects, George's return on invested capital will be

___%.