Answer:
10.5%
Explanation:
Calculation to determine Expected return of portfolio
Using this formula
Expected return of portfolio = Ws*E(rs) + Wb*E(rb)
Where,
Expected return stock E(rs) = 12%
Expected return bond E(rb) = 7%
Weight of stock Ws = 0.70
Weight of bond Wb = 0.30
Let plug in the formula
Expected return of portfolio= 0.7*12 + 0.3*7
Expected return of portfolio = 10.5%
Therefore Expected return of portfolio is 10.5%