Answer:
J = 0.422
K = 0.58
Step-by-step explanation:
When a portfolio is said to have risk that is equal to market, this means that the beta is equal to 1.
Let us define the weight of stock J = x
Let us define the Weight of stock K = (1-x)
To get the The Beta of portfolio = (x*1.26) + ((1-x)*0.81) = 1
When we open the brackets,
1.26x + 0.81 - .81x = 1
1.26x-0.81x = 1-0.81
0.45x = 0.19
To get x we divide through by 0.45
X = 0.422
Therefore the Weight of stock J = 0.422
Then the Weight of stock K = 1 - 0.422 = 0.578
Approximately 0.58