Suppose an economy has no income taxes or imports. How is the size of the expenditure multiplier related to the marginal propensity to consume? What is the multiplier if the MPC equals 0.25? If the MPC equals 0.50? If the MPC equals 0.90?
ANswer
Multiplier =1/(1-MPC)
the multiplier increases as the MPC increases
MPC=0.25
Multiplier =1/(1-0.25)=1.33333333=1.33
MPC=0.5
Multiplier =1/(1-0.5)=2
MPC=0.9
Multiplier =1/(1-0.9)=10
Suppose an economy has no income taxes or imports. How is the size of the expenditure...
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Consider two closed economies that are identical except for
their marginal propensity to consume (MPC). Each economy is
currently in equilibrium with real income and planned expenditure
equal to $100 billion, as shown by the black points on the
following two graphs. Neither economy has taxes that change with
income. The grey lines show the 45-degree line on each graph.The first economy's MPC is 0.5. Therefore, its initial planned
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