貨幣&相對價格問題? - 經濟

題目: When graphing a demand curve for corn, we are showing the relationship

between the quantity demand of corn and the

(A) money price of corn.

(B) relative price of corn.

(C) income effect.

(D) substitutin effect.


答案為B,

為什麼是用相對價格而不是用絕對價格呢?

謝謝~~



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