关于economics的求government expenditure investment is 400,saving is 400.tax revenues are 500.exports are 300,imports are 200.求government expenditure.请写上公式

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关于economics的求government expenditure investment is 400,saving is 400.tax revenues are 500.exports are 300,imports are 200.求government expenditure.请写上公式
关于economics的求government expenditure
investment is 400,saving is 400.tax revenues are 500.exports are 300,imports are 200.求government expenditure.请写上公式

关于economics的求government expenditure investment is 400,saving is 400.tax revenues are 500.exports are 300,imports are 200.求government expenditure.请写上公式
开放经济的国民收入,是本国和外国花费在本国生产要素生产的商品和服务的总和:
Y = C + I + G + EX – IM
? Y 代表GNP
? C 代表消费
? I 代表投资
? G 代表政府购买(government expenditure)
? EX 代表出口价值
? IM 代表进口价值
经常项目等于国民收入与国内居民花费的差额:
Y – (C+ I + G) = CA = EX – IM
其中,又可知道
Sp + Sg = S= I + CA
Sp = I + CA - Sg = I + CA + (G – T) (12-2)
– T 代表政府“收入” (净税收)
– Sg 政府储蓄= T- G
– 私人储蓄=Sp
– 开放经济中,储蓄既可用于积累资本存量,也可用于获取外国财
富S = Y-C-G= I + CA
– 所以 Sp = I + CA - Sg = I + CA + (G – T)
如果你这里的saving是指私人储蓄Sp,代入上面这公式即可
400=400+(300-200)+(G-500)
可得G=400

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