[請益] MC和SMC

看板Economics (經濟學)作者Agent00 (大陸雞)時間9年前 (2015/11/09 13:28)推噓0(0推 0噓 0→)

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────────────────────────── Number of │ Marginal cost │ Marginal social │ bus rides │ of bus company │ cost │ per week │(dollars per bus │ (dollars per │ │ ride) │ bus ride) │ ────────────────────────── 100 │ 0.25 │ 1.00 │ ────────────────────────── 200 │ 0.50 │ 1.50 │ ────────────────────────── 300 │ 1.00 │ 2.25 │ ────────────────────────── 400 │ 1.50 │ 3.00 │ ────────────────────────── 500 │ 1.75 │ 5.00 │ ────────────────────────── (1)The demand for bus service is perfectly elastic at a price of $1.00 a ride. The table above shows the bus company's marginal cost and the marginal social cost of the bus service. The competitive quantity of bus rides per week is A)100 B)200 C)300 D)500 Ans:B (2)The demand for bus service is perfectly elastic at a price of $1.25 a ride. The table above shows the bus company's marginal cost and the marginal social cost of the bus service. If the government levies a tax on bus rides so that the bus company takes into account the marginal social cost, the tax will be _____ a ride. A)$0.75 B)$1.60 C)$1.25 D)$3.25 Ans:A 這種題目該如何下手? 我只能想到SMC=MC+外部成本和社會最適產量決定於P=SMC 然後就卡住了囧 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 36.239.151.137 ※ 文章網址: https://www.ptt.cc/bbs/Economics/M.1447046899.A.CBB.html