Answer:
The answer is: Porter Plumbing's stock new rate of return is 14.38%
Step-by-step explanation:
First we calculate beta:
beta = (stock's rate of return - risk free rate) / market rate of return
beta = 6.25% / 4.75% = 1.32
If beta remained the same (1.32% and the market rate of return increased by 2%, then to find the new value for Porter's stock (P):
1.32 = (P - risk free rate) / 6.75%
P - risk free rate = 1.32 x 6.75% = 8.88%
P = 8.88% + risk free rate
P = 8.88% + 5.50% = 14.38%