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Calculate the value of the government expenditure multiplier at a given MPC = 0.80 and tax rate = 0.25.

Solution

✅ Correct Option: 1

With a proportional income tax, the government expenditure multiplier is 11−c(1−t)\frac{1}{1 - c(1-t)}.

Here c=0.80c = 0.80 and t=0.25t = 0.25, so c(1−t)=0.80×0.75=0.60c(1-t) = 0.80 \times 0.75 = 0.60.

Multiplier =11−0.60=10.40=2.5= \frac{1}{1 - 0.60} = \frac{1}{0.40} = 2.5.

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