Answer:
$39 billion
Step-by-step explanation:
Given marginal propensity to consume is 0.75,
the Spending Multiplier = 1 / (1 - MPC) = 1 / (1 - 0.75) = 1 / 0.25 = 4
To close a gap of $156 billion, the government needs to change spending by $156 / Spending Multiplier
= $156 /4
= $39 billion