2. A pension fund manager decides to invest at most GH50 million in U.S. Treasury Bonds paying 4% annual interest and in mutual funds paying 6% annual interest. He plans to invest at least GH20 million in bonds and at least GH6 million in mutual funds. Bonds have an initial fee of GH300 per million dollars, while the fee for mutual funds is GH100 per million. The fund manager is allowed to spend no more than GH8400 on fees on fees. How much should be invested in each to maximize annual interest? What is the maximum annual interest? (Hint: Objective function: z = 0.04x + 0.06y) nhical