determine the beta of the proposed portfolio

determine the expected return of the proposed portfolio

An investor currently has all of his wealth in T-Bills. He is considering investing 3/5th of his funds in Alphabet, Inc., whose beta is 1.20, 1/5th of his funds in Apple, Inc., whose beta is 1.15, and the remainder left in T-Bills. The expected risk-free rate (T-Bills) is 4 percent and the market risk premium is 6,8 percent