If nominal GDP increased by 11 percent and real GDP increased by only 5 percent, the price level must have increased by tentatively around 6 percent. Why is this so?
By using GDP deflator, the price level has increased by (11/5) X 100 = 220. Assuming everything is kept constant ceteris paribus. I don’t see why the concept of GDP deflator is not being able to be used here as we are speaking about price level.