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 8%. The probability distribution of the risky funds is as follows:

Stock fund (S):

Expected return- 23%

Standard deviation- 29%

Bond (B):

Expected return- 14%

Standard deviation- 17%

The correlation between the fund returns is 0.12.

a-1. What are the investment proportions in the minimum-variance portfolio of the two risky funds?