An investor is forming a portfolio by investing $75,000 in stock A that has a beta of 1.20, and $50,000 in stock B that has a beta of 0. The market...

An investor is forming a portfolio by investing $75,000 in stock A that has a beta of 1.20, and $50,000 in stock B that has a beta of 0.90. The market risk premium is equal to 7.75% and Treasury bonds have a yield of 3.75%. What is the required rate of return on the investor's portfolio? Please show explanation.