need to see the steps, got a little lost calculating the problem

Different investor weights Two risky portfolios exist for investing and is a bond portfolio with a bota of 0 7 and an expected return of 84%, and the other is an equity portfolio with a bota of 12 and an expected return of 16.3% if those portfolios are the only two available assets for investing, what combination of these two assuts will give the following investors the desired level of expected return? What is the beta of each Inventor's combined bond and equity portfolio? a. Bart desired expected return 15% b. Lisa desired expected return 13% c. Maggie desired expected return 11% a. The combination of these two assets that will give Bart an expected return of 15% in % in bonds and % in stocks (Round both answers to two decimal places)