Here we will consider that risk free rate of 3.01% is nominal as it has not been mentioned that it is real.
Thus expected return of B = risk free rate + (beta*market risk premium)
= 3.01% + 1.13*(13.51% - 3.01%)
= 14.88%
Value of A = 3200*25.1 = $80,320
Value of B = $75,300
Thus weight of A = 80,320/(80,320+75,300) = 51.6129%. Thus weight of B = 1-51.6129% = 48.3871%
Thus expected return of the portfolio = 51.6129% * 5.97% + 48.3871% * 14.88%
= 0.1028
(Note that if risk free rate is implied as real risk free rate then return of B = 3.01%+2.1% + 1.13*(13.51%-3.01%-2.1%) = 14.60%. In this case the portfolio return will be = 0.1015)
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