A $16,000 portfolio is invested in a risk-free security and two stocks. The beta of stock A is 0.82 while the beta of stock B is 1.72. One-half of the portfolio is invested in the risk-free security. How much is invested in stock A if the beta of the portfolio is 0.57?
Rosamerta owns a stock that has an expected return of 15.53 percent and a beta of 1.61. The U.S. Treasury bill is yielding 3.22 percent and the inflation rate is 3.86 percent. What is the expected rate of return (in percents) on the market?