Answer:
1. Money multiplier 10
2. Money supply 1000 billion dollars.
3. change in reserves 500 billion dollars
4. Change in money supply 500 billion dollars
Step-by-step explanation:
1. Calculation to determine the money multiplier
Money multiplier = 1 / 0.1
Money multiplier= 10
2. Calculation to determine The money supply
Money supply =10 x 100 billion dollars
Money supply = 1000 billion dollars.
3. Calculation to determine the change in reserves and the change in the money supply
First step is to calculate the money multiplier wmoney multiplier= 1/ 0.20 = 5
Now let calculate the change in reserves
change in reserves = 100 billion dollars x 5
change in reserves = 500 billion dollars
4. Decline in the money supply =1000 billion dollars - 500 billion dollars = 500 billion dollars.