Divide $100/2.75= about 36 days as $2.75* x 36=$99
GDP deflator is nominal GDP divided by real GDP.
Therefore, 225/real GDP = 3, and then real GDP would then equal 75.
Inflation and Periods of Depression are the two main economic problems that keynesian economics seeks to address. So the answer in this question is Periods of depression and inflation. There are so many economic problems but the main is Inflation and Periods of Depression.
Gasoline prices will rise extensively.