Mardi Received an Inheritance Of $\$ 70,000$ She Invested Part At

Multiple Choice

Mardi received an inheritance of $\$ 70,000$ . She invested part at $10 \%$ and deposited the remainder in tax- free bonds at 9\%. Her total annual income from the investments was $\$ 6900$ . Find the amount invested at $10 \%$ .

A) $\$ 59,000$
B) $\$ 63,100$
C) $\$ 60,000$
D) $\$ 30,000$