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Sagot :
Answer:
A. MPC = 0.9
B. MPS = 0.1
C. APC= 0.75
D. APC= 0.764
Explanation:
a. Calculation for the economy's MPC (Marginal propensity to consume)
Using this formula
MPC = ΔConsumption/ΔIncome
Let plug in the formula
MPC = $18/$20
MPC = 0.9
Therefore the economy's MPC (Marginal propensity to consume) will be 0.9
b. Calculation for What is its MPS (Marginal propensity to save)
Using this formula
MPS = ΔSaving/ΔIncome
Let plug in the formula
MPS = $2/$20
MPS = 0.1
Therefore its MPS will be 0.1
c. Calculation for What was the APC ( Average propensity to consume ) before the increase in disposable income
Using this formula
APC = Consumption/Income
Let plug in the formula
APC = $150/$200
APC= 0.75
Therefore APC will be 0.75
d. Calculation for What was the APC after the increase
First step is to calculate the disposable income
Disposable income=$200 + $20
Disposable income=$220
Second step is to calculate the Consumption after the change
Consumption after the change =$150 + $18
Consumption after the change =$168
Now let calculate the APC after the increase
APC = $168/$220
APC= 0.764
Therefore APC after the increase will be 0.764
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