Answer :
Answer: $120 billion
Explanation: A recession occurs when there is a reduction in economic activities. One way to solve the issue of recession is through government expenditure.
With regards to the question, MPC = 0.7
To overcome the $400 billion gap, government will spend= 400 × (1 - MPC)
= 400 × (1 - 0.7)
= 400 × 0.3
= 120
For the government to overcome the $400 billion gap in the economy, the government has to spend at least $120billion.