Answer:
The correct answer is 8%.
Step-by-step explanation:
The money multiplier shows the degree of change that can be caused in the money supply due to a change in the deposits. It is calculated as 1/RR or required reserve ratio.
If the Federal reserve bank wants the money multiplier to be 12.5,
Money multiplier =
![(1)/(RR)](https://img.qammunity.org/2020/formulas/business/college/d8621f8e1mbnouc1fwas2s863kwabwleo1.png)
12.5 =
![(1)/(RR)](https://img.qammunity.org/2020/formulas/business/college/d8621f8e1mbnouc1fwas2s863kwabwleo1.png)
RR =
![(1)/(12.5)](https://img.qammunity.org/2020/formulas/business/college/84xyj6kiv5azwgqqiemshch8d6u8pwnh26.png)
RR = 0.08
So the required reserve ratio should be 8%.