Solve the Problem $\$ 178,000$ Trust Is to Be Invested in Bonds Paying

Multiple Choice

Solve the problem.
-A $\$ 178,000$ trust is to be invested in bonds paying $7 \%$ , CDs paying $6 \%$ , and mortgages paying $9 \%$ . The bond and CD investment together must equal the mortgage investment. To earn a $\$ 13,750$ annual income from the investments, how much should the bank invest in bonds?

A) $\$ 40,000$
B) $\$ 89,000$
C) $\$ 38,000$
D) $\$ 49,000$