Please assist with the following problem.
Problem: I have a 4 million dollar investment fund it consists of 4 stocks
stock investment beta
a 400000 1.50
b 600000 -0.50
c 1000000 1.25
d 2000000 0.75
The market required rate of return is 14 percent and the risk free rate is 6 percent, how do I determine the fund's required rate of return.