1) You have a portfolio consisting solely of Stock A and Stock B. The portfolio has an expected return of 10.2 percent. Stock A has an expected return of 12.1 percent while Stock B is expected to return 6.7 percent. What is the portfolio weight of Stock A?

2) Your portfolio is comprised of 30 percent of Stock X, 20 percent of Stock Y, and 50 percent of Stock Z. Stock X has a beta of 1.02, Stock Y has a beta of 0.96, and Stock Z has a beta of 1.27. What is the beta of your portfolio?