The current economic problem in Econoland is an issue of excessive demand and potential inflation.
A contractionary fiscal policy is the best policy to use to calm the economy and prevent inflation from spiraling out of control.
When the country is at full employment, the level of output is $225 billion but the current level of output is significantly higher at $525 billion, this suggests that the economy is producing well beyond its maximum sustainable capacity.
The MPC (Marginal Propensity to Consume) in Econoland is 0.8, this means that consumers are spending 80% of any additional income they receive. With output exceeding the full-employment level by such a large margin, it means demand in the economy is excessive.
This could lead to inflationary pressures as businesses struggle to meet the heightened demand and cause prices to rise. To address this, Econoland may need to implement measures to reduce aggregate demand such contractionary fiscal policy to cool down the economy and prevent inflation from spiraling out of control.