You have 3 stocks in your portfolio with the following properties:
Stock Portfolio weight Expected Return Variance Correlation with A Correlation with B Correlation with C
A 20% 5% 10% 100% 20% 10%
B 50% 7% 20% 20% 100% 70%
C 30% 9% 35% 10% 70% 100%
Compute the expected return and variance of the portfolio.