Answer:
16.25%
Explanation:
The computation is shown below:
Let us assume the weight of risky portfolio is X
So, the standard deviation of the complete portfolio is
Standard Deviation of portfolio = X × Standard deviation of risky portfolio \
25% = X × 20%
So X = 1.25
Now
Expected Return on the complete portfolio is
= 1.25 × 15% - 0.25 × 10%
= 16.25%