You own three stocks: 1,000 shares of Apple Computer, 10,000 shares of Cisco Systems, and 5,000 shares of Goldman Sachs. The current share prices and expected returns of Apple, Cisco, and Goldman Sachs are, respectively, $128,$18,$125 and 12%,10%,10.5%. a. What are the portfolio weights of the three stocks in your portfolio? b. What is the expected return of your portfolio? c. Suppose the price of Apple stock goes up by $5, Cisco rises by $7, and Goldman Sachs falls by $13. What are the new portfolio weights? d. Assuming the stocks' expected returns remain the same, what is the expected return of the portfolio at the new prices? a. What are the portfolio weights of the three stocks in your portfolio? The portfolio weight of Apple Computer is %. (Round to one decimal place.)