Answer:
the beta be for the other stock in your portfolio is 1.73
Explanation:
The computation of the beta be for the other stock in your portfolio is shown below:
Given that
risk free asset contains the beta of 0
And,
market beta = 1
Now
1 = 1 ÷ 3 × 0 + 1 ÷ 3 × 1.27 + 1 ÷ 3 × beta
The beta of other stock = 1.73
hence, the beta be for the other stock in your portfolio is 1.73
Here we assume that one-third should be invested in all 3 things each