# Answer to Question #51413 in Macroeconomics for William WWasonga Omole

Question #51413

if: C = 120 + 0.8Y, I = 200 + 0.05i and Y = 1400, What is the size of government expenditure multiplier and savings?

Expert's answer

We can use the following formulas:

Government expenditure multiplier = 1 / (1-MPC)

MPC is the marginal propensity to consume

Government expenditure multiplier = 1 / (1-0.8) = 5

We have the consumption function in the form C = a + MPC (Y) that

autonomous consumption is a. The savings function is S = -a + (1 –

MPS) (Y)

So, the saving function is:

S = -120 + 0.2 Y

S = -120 + 280 = 160

Government expenditure multiplier = 1 / (1-MPC)

MPC is the marginal propensity to consume

Government expenditure multiplier = 1 / (1-0.8) = 5

We have the consumption function in the form C = a + MPC (Y) that

autonomous consumption is a. The savings function is S = -a + (1 –

MPS) (Y)

So, the saving function is:

S = -120 + 0.2 Y

S = -120 + 280 = 160

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