Eastern Bank holds assets and liabilities whose average duration's and dollar amounts are as 7 shown in this table Avg. Duration(yrs) $ Amount Asset and Liability Items 15.00 $75.00 $500.00 $350.00 Investment Grade Bonds 3.00 Commercial Loans 6.00 Consumer Loans $450.00 2.10 Deposits Non-deposit Borrowings 0.35 a. What is the weighted average duration of Easter Banks asset portfolio and liability * ?portfolio