Answer:
y = 50 %
Explanation:
As per the data given in the question, Â computation are as follows:
Expected return = y Ă— expected rate of return for portfolio + (1 - y) Ă— rate of T-bills
By putting the value from the given data in the above formula, we get
0.09 = yĂ—0.12 + (1 - y)Ă—0.06
0.09 = 0.12y + 0.06 - 0.06y
0.03 = 0.06 y Â
y = 0.50
= 50%