An investment fund manager can invest a maximum of $100 000 in either shares (x) or gold (y) subject to the following constraints L The value of the shares must be less than or equal to 3 times the value of the gold. 2. The value of the shares must be greater than or equal to the value of the gold. Historically, shares have returned 10% (they increase in value by 10%), while gold has returned 169% per year. Use lincar programming techniques to determine the value of shares and gold purchased to maximise profit (or return).