An investor's portfolio currently is worth $1 million. During the year, the investor sells 500 shares of FedEx at a price of $180 per share and 3,000 shares of Cisco at a price of $30 per share. The proceeds are used to buy 1,000 shares of IBM at $160 per share. a. What is the portfolio turnover rate? b. If the shares in FedEx originally were purchased for $140 each and those in Cisco were purchased for $20, and the investor's tax rate on capital gains income is 20%, how much extra will the investor owe on this year's taxes as a result of these transactions? (Ctrl)