hey there!:
First city bank = $64,000 deposited for 9 years at 7% with simple interest then after 9 years I will have a total of $104,320
Second city bank = $64,000 deposited for 9 years at 7% with compound interest then after 9 years I will have a total of $117,661.39.
Therefore we will make $13,341.39 more through the second city bank.
Hope this helps!