102稅務特考財政學 - 特考
By Charlotte
at 2013-04-06T13:25
at 2013-04-06T13:25
Table of Contents
23、
甲、乙兩人對一純粹公共財的反需求函數分別為P=10-Q及P=5-Q,期中P、Q分別為
價格及數量,供給線為P=3,假設社會上對此純粹公共財的需求只有甲、乙兩人,
請問社會最適數量為何?
(A)7 (B)6 (C)4 (D)2
答案:(A)
想法:純粹公共財的需求曲線為垂直加總,得P=15-2Q,題示供給線為P=3,令D=S得
Q=6。但考選部答案為Q=7,此題是我算法有誤還是有考慮不周的地方呢?懇請
賜教,謝謝。
--
甲、乙兩人對一純粹公共財的反需求函數分別為P=10-Q及P=5-Q,期中P、Q分別為
價格及數量,供給線為P=3,假設社會上對此純粹公共財的需求只有甲、乙兩人,
請問社會最適數量為何?
(A)7 (B)6 (C)4 (D)2
答案:(A)
想法:純粹公共財的需求曲線為垂直加總,得P=15-2Q,題示供給線為P=3,令D=S得
Q=6。但考選部答案為Q=7,此題是我算法有誤還是有考慮不周的地方呢?懇請
賜教,謝謝。
--
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