Jason Jackson is attempting to evaluate two possible portfolios consisting of the same five assets but held in different proportions. He is particularly interested in using beta to compare the risk of the portfolios and, in this regard, has gathered the following data:

Portfolio Weights Asset Asset Beta Portfolio A Portfolio B 1 1.28 15% 29% 2 0.65 34% 5% 3 1.28 7% 22% 4 1.09 8% 20% 5 0.88 36% 24% Total 100% 100%

a. Calculate the betas for portfolios A and B.

b. If the risk-free rate is 2.4 % and the market return is 5.1 %, calculate the required return for each portfolio using the CAPM.