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Saturday, October 25, 2014
Economics - Elasticity Exercise Ex18 (經濟學 - 彈性, 習題 18)
習題 18 (p.63):若阿榮在房租的支出永遠占其所得的 25%,則所得彈性 (
elasticity
) 為: (A) 0.25 (B) 1.00 (C) 2.50 (D) 25.0 。 哪一選項為真?
答:(B) 1.00。
令 R = 房租支出金額,I = 所得金額;則,阿榮的所得彈性推導過程如下 ...
完
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