The market portfolio has an expected return of 16.09% and a standard deviation of 20.15%. An investor places his capital in a CAPM efficient portfolio with an expected return of 27.15% and a standard deviation of 40.30% by leveraging himself and thus investing 200% in the market portfolio. According to the given conditions, what return should a risk-free investment give? Enter your answer in percentages and round to two decimal places, e.g. if you want to answer 10.23% then write 10.23.