請問一題總經 - 經濟

assume that the MPC is 0.8 and investment rises by 50 million.How much additi

onal saving will this generate in the first round of spending??



答案是50x0.2=10

請問這是怎麼來的呢 ???為什麼可以直接從投資乘上MPS就得解呢??謝謝!!

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