Currently, the risk-free rate, rRF, is 5% and the required return on the market,rM,is 11%.?

Question

currently, the risk-free rate, rRF, is 5% and the required return on the market,rM,is 11%. Your portfolio has a required rate of return of 9%. Your brother has a portfolio with a beta that is twice the beta of your portfolio. What is the required rate of return on you brother's portfolio

Answer 1

13%  -- I believe it would be the "expected" rate of return, as determined by CAPM.

my portfolio has a beta of 0.67; my brothers is 1.33

Answer 2

15%