A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a rate of 4.6%. The probability distribution of the two risky funds is as follows:

	Expected Return	Standard Deviation
Stock fund (S)	16%	36%
Bond fund (B)	7%	30%

The correlation between the two fund returns is 0.16.

Calculate the standard deviation of the optimal risky portfolio. Assume that short sales of mutual funds are allowed. Enter as a decimal number rounded to 4 decimal places