6. We have access to 3 portfolios (A, B, C) which contains stocks various combinations of stocks XXX, YYY, ZZZ. Each unit of portfolio A holds 6 shares of XXX, 12 of YYY, and 5 of ZZZ. Each unit of portfolio B holds 2 shares of XXX, 8 of YYY, and 4 of ZZZ. Each unit of portfolio C holds 6 shares of XXX, 3 of YYY, and 5 of ZZZ. We want increase the number of shares in our portfolio with 126 shares of XXX, 189 of YYY, and 378 of ZZZ. (a) How many units of each portfolio do we need to buy/sell? (15 Marks] (b) If we currently own 100 units of each portfolio already, what will our end position be? [5 Marks] 6. We have access to 3 portfolios (A, B, C) which contains stocks various combinations of stocks XXX, YYY, ZZZ. Each unit of portfolio A holds 6 shares of XXX, 12 of YYY, and 5 of ZZZ. Each unit of portfolio B holds 2 shares of XXX, 8 of YYY, and 4 of ZZZ. Each unit of portfolio C holds 6 shares of XXX, 3 of YYY, and 5 of ZZZ. We want increase the number of shares in our portfolio with 126 shares of XXX, 189 of YYY, and 378 of ZZZ. (a) How many units of each portfolio do we need to buy/sell? (15 Marks] (b) If we currently own 100 units of each portfolio already, what will our end position be? [5 Marks]