You have $9,000 to invest. You've done some security analysis and generated the following data for three stocks and Treasury bills, including weights in the optimal risky portfolio (ORP) from doing Markowitz portfolio optimization:

Security	Stock A	Stock B	Stock C	T-bills
Expected return (%)	12	8	5	4
Variance	0.04	0.03	0.02	0
Beta	1.2	1.5	0.8	0
Weight in ORP (%)	44	18	38	0

Part 1

What is the expected return of the optimal risky portfolio (ORP)?

Part 2

How much money should you invest in the ORP to achieve an expected return of 8% for the complete portfolio (in $)?

Part 3

If you want to achieve an expected return of 8% for the complete portfolio, how much money should you invest in stock A (in $)?