21. You have $30,000 to invest in a stock portfolio. Your choices are Stock X with an expected return of 14.3 percent and Stock Y with an expected return of 8.8 percent. Your goal is to create a portfolio with an expected return of 13 percent. All money must be invested. How much will you invest in Stock X

22. 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 1.05, Stock Y has a beta of 0.94, and Stock Z has a beta of 1.32. What is the beta of your portfolio?