Bacon asked in 社會與文化語言 · 1 decade ago

經濟問題(彈性需求)

Prior to a price increase, the price and quantity demanded for a product were $10 and 100, respectively. After the price increase, they were $12 and 90.

a.Calculate the arc elasticity of demand.

b.Is the demand elastic or inelastic over this region?

c.What happened to total revenue?

價格與數量需求,造成產品價格與數量分別為$10和$100,經過價格提升,產品價格與數量分別為$12和90

A 計算彈性需求

B 在這地區是彈性需求還是非彈性需求

C 什麼是影響了全部收益

1 Answer

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  • 1 decade ago
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    1. Elasticity of Demand Curve:

    縱座標是 Price; 橫座標是 Quanty, Curve 是 \ 。

    2. 答案是: Inelastic,原因在於此公式:

    Elasticity = (% change in quantity / % change in price)

    (10% / 20%) = 0.5 ---> Elasticity = 0.5

    當Elasticity >=1 ,表示Elastic ,因為需求量的變動大於價格的變動。所以當一種產品的價格調整了高或低,需求量因此(大量的)減少或增多,表示此種物品可能很不是生活必需品或是相類似產品的很多,消費者有其他選擇,繼而與以取代之。

    當Elasticity <1, 表示 Inelastic,因為需求量的變動小於價格的變動。所以當一種物品的價格調整了,需求量的改變比例小於價格調整的比例,就表示這種物品很可能是生活必需品,或是難以被取而代之的物品。所以不管價格改變了多少,需求量仍然沒有改變很多。

    3. Total Revenue= 原來 $10一個,賣100個,可收入$1000。價格調漲後,$12 賣90個,收入$1080。所以Total Revenue 在價格調漲後多了$80。

    2008-10-02 02:23:36 補充:

    sorry 橫座標是 Quantity...

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