Answer:
$120 billion
Step-by-step explanation:
Economy operating at $300 billion above its natural level of output.
Marginal propensity to consume, MPC = 3/5 = 0.6
For closing this expansionary gap, the government have to decrease its spending by the amount calculated as follows:
Spending multiplier:
= 1/ (1 - MPC)
= 1/ (1 - 0.6)
= 1/ 0.4
= 2.5
Hence, the government spending reduces by
= Expansionary gap ÷ Spending multiplier
= $300 ÷ 2.5
= $120 billion