-What New Asset Duration Will Immunize the Balance Sheet

$\begin{array} { l l l } \text { Assets } & \text { Duration } & \text { Market Value } \\\text { Overnight Money } & 0.0 & \text { \$3 Million } \\\text { 1-year T-Bonds } & 0.6 & \$ 8 \text { Million } \\\text { Loans } & 2.20 & \$ 20 \text { Million } \\\text { Mortgages } & 7.50 & \$ 8 \text { Million } \\\text { Liabilities } & \text { Duration } & \text { Market Value } \\\text { Checking Accounts } & 0.0 & \$ 20 \text { Million } \\\text { Short-term CD's } & 0.4 & \$ 4 \text { Million } \\\text { Long-term CD's } & 3.20 & \$ 12 \text { Million } \\\text { Equity } & &\text { \$3 Million } \\\end{array}$
-What new asset duration will immunize the balance sheet?