Solution by hand writting. Without Excel please.

please show all formulas and work.

Create a portfolio which is twice as risky as the market. You have $60,000 to invest and have already invested $20,000 in Stock A and $15,000 in Stock B. Fill in the rest of the table (a, b, c and d): (10 marks) Stock A Stock B Stock C Risk-free Assets Total Amount invested 20,000 15,000 (a) (b) 60,000 Beta 1.6 0.7 2.3 (c) (d)