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If restaurant meals are not inferior goods,then the income e

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If restaurant meals are not inferior goods,then the income effect of a price change
A.will work in the same direction as the substitution effect
B.will work in the opposite direction from the substitution effect
我选的B .但答案是A.我不明白为啥是同样方向.是不是我对effect有误解?
宏观经济学。忘改分类了
If restaurant meals are not inferior goods,then the income e
等我学好了经济就教你哈~