Answer:
c. $125.00
Step-by-step explanation:
Let us assume the x for invested in portfolio
Invested proportion × expected return of the optimal portfolio + (1 - invested proportion) × risk free rate = expected return
x × 7% + (1 - x) × 3% = 8%
7% x + 3% - 3% x = 8%
4% x = 5%
X = 1.25
Now the invested amount would be
= 1.25 × $500
= $625
So, the borrowed amount would be
= $625 - $500
= $125