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20. Using CAPM A stock has a beta of 1.25 and an expected return of 13 percent. A risk-free asset currently earns 2.6 percent. a. What is the expected return on a portfolio that s equally invested in the two assets? b. If a portfolio of the two assets has a beta of 5. what are the portiollo weights? c. If a portfolio of the two assets has an expected return of 10 percent, what is Iis beta? d. If a portfolio of the two assets has a beta of 2.50. what are the portfolio weights? How do you inter- pret the weights for the two assets in this case? Explain