[考試] 彈性問題
來源: 94政大企研
科目: 個體經計 彈性章節
問題: Suppose that the price elasticity of demand for a product is +1 and that
the price elasicity of supply is +1. Assume also that income elasticity
of demand is +2. Then and increase in income of 10% will raise
equilibrim price by
(a) 10% (b) 5% (c) 20% (d) an annual amount that cannt be determined
答案是a
我的想法:
題目已經給了income elasticity = 2 = ΔQd/Qd / ΔM/M
那當ΔM/M 為10%時,表示ΔQd/Qd = 20%
代入price elasticity ΔQd/Qd / ΔPx/Px = 1
所以ΔPx/Px =20%?? 可以這樣解釋嗎??
這樣解釋跟答案好像又不太對 是少考慮了哪方面??
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