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 88-2.7, their present quote, to a level of about 95. Given a required margin deposit of $1,200 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 __%.