4) An investment group has $450,000 to work with for investments. They can invest in bonds (7% return), stocks (10% return), or global equities (16% return). The global equities are far riskier so they want to invest at least twice as much in bonds and stocks combined as they do in the equities. They also want to invest at least 15% of their investment in bonds. How much should they invest in each in order to maximize their returns?