Final answer:
To arrive at an acceptable overall level of risk, the private investment club should invest $60,000 in high-risk stocks, $140,000 in medium-risk stocks, and $200,000 in low-risk stocks. This allocation will allow the club to achieve a return of $36,000 per year on a total investment of $400,000.
Step-by-step explanation:
To determine how much the club should invest in each type of stock, we need to first calculate the rate of return for each category of stock. Let's denote the amount invested in high-risk stocks as H, medium-risk stocks as M, and low-risk stocks as L. Given that the investment goal is to have a return of $36,000 per year, we can set up the following equation:
0.14H + 0.09M + 0.07L = 36000
Since the investment in low-risk stocks should be equal to the sum of the investments in the stocks of the other two categories, we have:
L = H + M
We also know that the total investment amount is $400,000:
H + M + L = 400000
Substituting L with H + M in the above equation, we get:
H + M + (H + M) = 400000
2H + 2M = 400000
Now we have a system of two equations with two variables. Solving these equations will give us the amounts to invest in each type of stock. Solving the second equation for H, we get:
H = (400000 - 2M) / 2
Substituting this value of H into the first equation, we obtain:
0.14((400000 - 2M) / 2) + 0.09M + 0.07((400000 - 2M) / 2) = 36000
Simplifying and solving for M gives us:
M = 140000
Substituting this value of M into the equation for H, we get:
H = (400000 - 280000) / 2 = 60000
Finally, substituting the values of H and M into the equation for L, we find:
L = H + M = 60000 + 140000 = 200000
Therefore, the club should invest $60,000 in high-risk stocks, $140,000 in medium-risk stocks, and $200,000 in low-risk stocks.