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Suppose GDP is $800 billion, taxes are $150 billion, private saving is $50 billion, and public saving is $20 billion. Assuming a closed economy, consumption (C), government spending (G), and Investment (I) are:

Sagot :

Answer:

Consumption (C ) = $600 billion,

- Government spending (G ) = $130 billion,

- Investment ( I) = $70 billion.

Explanation:

In a closed economy, the fundamental national income identity is given by:

Y = C + I + G

where:

- Y is the GDP,

- C is consumption,

- I is investment,

- G is government spending.

We are given the following values:

- GDP ( Y ) = $800 billion,

- Taxes ( T ) = $150 billion,

- Private saving ( Sp ) = $50 billion,

- Public saving (Sg ) = $20 billion.

We also know that in a closed economy:

National saving (S) = Private saving+ Public saving

Therefore,

S = Sp + Sg

S = 50 + 20

S = 70

In a closed economy, national saving is also equal to investment:

S = I

I = 70

Next, we need to determine consumption (C ) and government spending ( G ).

From the information given, we can find the government budget. The government budget can be described as:

\[ \text{Public saving} = T - G \]

Given public saving (\( S_g \)) is $20 billion and taxes (\( T \)) are $150 billion:

Sg = T _ G

20 = 150 - G

G = 150 - 20

G = 130

Now we have the values for ( Y ), ( I ), and ( G ):

Y = C + I + G

800 = C + 70 + 130

800 = C + 200

C = 800 - 200

C = 600

Thus, we have:

- Consumption ( C ) = $600 billion,

- Government spending ( G ) = $130 billion,

- Investment (I ) = $70 billion.