You Have $450,000 and Are Considering Investing in Three Municipal

You have $450,000 and are considering investing in three municipal bond funds, Pimco, Fidelity Spartan, and Columbia Oregon. You have the following data:
$$\begin{array} { | c | c | } \hline \text { Company } & \text { Yield } \\\hline \text { PNF (Pimco NY) } & 7 \% \\\hline \text { FDMMX (Fidelity Spartan Mass) } & 5 \% \\\hline \text { CMBFX (Columbia Oregon) } & 4 \% \\\hline\end{array}$$
Your broker has made the following suggestions:
At least 50 percent of your total investment should be in CMBFX.
No more than 10 percent of your total investment should be in PNF.
How much should you invest in each fund to maximize your anticipated returns while following your broker's advice
$__________ in PNF, $__________ in FDMMX, and $__________ in CMBFX.