Final answer:
To reduce inflationary pressure, the government should raise taxes by $9 billion, leveraging the multiplier effect that corresponds to the given MPC of 0.75, in order to reduce aggregate demand by the desired $36 billion.
Step-by-step explanation:
To combat high inflation, the government can utilize fiscal policy measures to decrease aggregate demand. Specifically, to reduce inflationary pressure, the government may raise taxes or lower spending. Given a marginal propensity to consume (MPC) of 0.75, the reduction in aggregate demand desired is $36 billion. The fiscal multiplier in this scenario is the reciprocal of the marginal propensity to save (MPS), which is 1 minus the MPC, therefore the multiplier is 1 / (1 - 0.75) = 4. To achieve a $36 billion reduction in aggregate demand, the government should raise taxes by the amount of the desired decrease divided by the multiplier, which is $36 billion / 4 = $9 billion.