Answer:
$30 billion
Step-by-step explanation:
Calculation to determine the difference in the resulting change in checkable deposit
Using this formula
Difference in checkable deposit=Increase in reserve/(1* Reserve ratio 8%)-Increase in reserve/(1* Reserve ratio 10%)
Let plug in the formula
Difference in checkable deposit=$12 billion/(1*8%)-$12 billion/(1*10%)
Difference in checkable deposit=$12 billion/0.08-$12 billion/0.10
Difference in checkable deposit=$150 billion-$120 billion
Difference in checkable deposit=$30 billion
Therefore the difference in the resulting change in checkable deposit is $30 billion