Hi

I'm currently working on an assignment. The assignment is based on Upasana Mitra's Investments: Delineating and efficient portfolio. I have worked out the majority of the excel spreadsheet. I need help in working out the optimal weights in the risky and risk free asset. As you can see from the second image below, I have worked out the weights in each fund using. How do I compute the final portfolio that includes a risk free asset?

solver.