please show your work

3. Consider a world that only consists of the three stocks shown in the following table: Stock First Bank Fast Mover Funny Bone Total Number of Shares Outstanding 100 Million 50 Million 200 Million Current Price per Share $100 $120 $30 Expected Return 18% 12% 15% a. Calculate the total value of all shares outstanding currently. b. What fraction of the total value outstanding does each stock make up? c. You hold the market portfolio, that is, you have picked portfolio weights equal to the answer to part b (that is, each stock's weight is equal to its contribution to the fraction of the total value of all stocks). What is the expected return of your portfolio? 4. There are two ways to calculate the exnected return ofa