Answer:
9.33
Step-by-step explanation:
The computation of the expected return on the portfolio is given below:
Given that the investment of $80,000 is made in full diversified market portfolio so the beta is 1
And, the rest should be the riskless security so the beta will be zero
Now the expected rate of return is
For $80,000
= 4 + 8 × 1
= 12%
For $40,000
= 4 + 8 × 1
= 4%
Now the Expected Return of the Portfolio is
= Respective returns × respective weights
= 12 × ($80,000 ÷ $120,000) + 4 × ($40,000 ÷ $120,000)
= 8 + 1.33
= 9.33