[Econ衝**] 2017 DSE 經濟科試前討論區

改乜名好呀 2017-4-14 00:49:06

其實有個位唔明好耐

點解當A係自己屋企唱歌嘅時候 B係佢隔離屋聽到佢嘅歌聲而係A冇比/收B錢嘅情況下如果B鍾意A嘅歌聲就未必會有divergence between private and social benefits 但如果B唔鍾意A嘅歌聲就一定會有divergence between private and social costs?

我自己嘅理解係 A唱歌都要用時間用力氣(private cost) 但佢都會換黎self-satisfaction(private benefit) 咁點解costs一定會有divergence而benefits冇
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如果碰巧鋼琴家MPB = MPC果點係鄰居MB = 0
咁就無divergence between private benefit and social benefit

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原來係咁

牛丸麻辣五小 2017-4-14 00:55:44

咁其實假設option A係去公園（MB=$100)
Option B 去睇電影 (MB=$200, explicit cost=$80)
咁去睇電影嘅OC係咪$100，total cost先係$180？
去公園個OC係200定120？
呢個就係explicit定implicit個問題

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唔係好明MB代表咩

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點解關MB事嘅

牛丸麻辣五小 2017-4-14 01:09:16

咁其實假設option A係去公園（MB=$100)
Option B 去睇電影 (MB=$200, explicit cost=$80)
咁去睇電影嘅OC係咪$100，total cost先係$180？
去公園個OC係200定120？
呢個就係explicit定implicit個問題

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唔係好明MB代表咩
:^(
點解關MB事嘅

marginal benefit
姐係the value of the activity to you
recall that opportunity cost is highest valued option forgone

即係去公園對我嚟講有$100嘅價值？

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牛丸麻辣五小 2017-4-14 01:11:19 咁加埋個cost應該係180

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牛丸麻辣五小 2017-4-14 01:23:10 我就覺得嗰$80係選擇睇戲嗰時先要考慮
睇戲嘅$200MB唔會因為戲飛錢而減少喎

:^(

Sumption 2017-4-14 10:00:32

我就覺得嗰$80係選擇睇戲嗰時先要考慮
睇戲嘅$200MB唔會因為戲飛錢而減少喎
:^(

睇戲嘅cost= implicit + explicit
= $100+$80
問題係OC係兩者之和定係implicit cost only
有冇人答下

:^(

呀肥 2017-4-14 10:06:00

我就覺得嗰$80係選擇睇戲嗰時先要考慮
睇戲嘅$200MB唔會因為戲飛錢而減少喎
:^(

睇戲嘅cost= implicit + explicit
= $100+$80
問題係OC係兩者之和定係implicit cost only
有冇人答下
:^(

OC當然係從full cost角度去睇，係兩者之和。

雕雕雕啦 2017-4-14 12:16:25 想問technology advancement 點影響production point

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張敏 2017-4-14 12:26:37

想問technology advancement 點影響production point
:^(

:^(

Both good x&y enjoy tech advance?

Sumption 2017-4-14 12:28:39

我就覺得嗰$80係選擇睇戲嗰時先要考慮
睇戲嘅$200MB唔會因為戲飛錢而減少喎
:^(

睇戲嘅cost= implicit + explicit
= $100+$80
問題係OC係兩者之和定係implicit cost only
有冇人答下
:^(

OC當然係從full cost角度去睇，係兩者之和。

點解係full cost角度？by definition OC 唔係the value of the next best alternative forgone咩

:^(

張敏 2017-4-14 12:28:46

想問technology advancement 點影響production point
:^(

:^(

成條LRAS curve 向右移
output increases

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讓風箏飛. 2017-4-14 12:29:15 想問stamp duty , air passenger departure tax , motor vehicle first registration tax 係direct tax 定indirect tax?

張敏 2017-4-14 12:32:25

想問technology advancement 點影響production point
:^(

:^(

Both good x&y enjoy tech advance?

If good x and good y both enjoy tech advance
Ppf shift out in the same extent
For straight ppf , production point with trade determined by comparative adv (oc will remain unchange)
For concave ppf, production point with trade=point that tangent with cpf

:^(

雕雕雕啦 2017-4-14 12:32:44 如果本來 Ocx> ToT x CA係Y 但如果only good X有technology advancement 變佐做ToTx>OCx 副圖點畫

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讓風箏飛. 2017-4-14 12:32:55

想問technology advancement 點影響production point
:^(

:^(

Both good x&y enjoy tech advance?

If good x and good y both enjoy tech advance
Ppf shift out in the same extent
For straight ppf , production point with trade determined by comparative adv (oc will remain unchange)
For concave ppf, production point with trade=point that tangent with cpf

:^(

i think u are correct

張敏 2017-4-14 12:38:28

如果本來 Ocx> ToT x CA係Y 但如果only good X有technology advancement 變佐做ToTx>OCx 副圖點畫
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1) ppf shitt outwards (only good x)
2) production point: (x,0)
3) draw cpf which cpf based on production point

:^(

呀肥 2017-4-14 12:38:38

我就覺得嗰$80係選擇睇戲嗰時先要考慮
睇戲嘅$200MB唔會因為戲飛錢而減少喎
:^(

睇戲嘅cost= implicit + explicit
= $100+$80
問題係OC係兩者之和定係implicit cost only
有冇人答下
:^(

OC當然係從full cost角度去睇，係兩者之和。

點解係full cost角度？by definition OC 唔係the value of the next best alternative forgone咩
:^(

睇戲嘅戲飛錢都可以用係alternative option例如買衫、食野

再唔明睇wiki英文版"opportunity cost"。佢都有舉例說明

呀肥 2017-4-14 12:38:55

想問stamp duty , air passenger departure tax , motor vehicle first registration tax 係direct tax 定indirect tax?

indirect

雕雕雕啦 2017-4-14 12:40:36

如果本來 Ocx> ToT x CA係Y 但如果only good X有technology advancement 變佐做ToTx>OCx 副圖點畫
:^(

1) ppf shitt outwards (only good x)
2) production point: (x,0)
3) draw cpf which cpf based on production point

:^(

係咪兩條CPF打交叉

:^(

即溶豆腐花 2017-4-14 12:41:45 不負責任貼題
我估今年會出美國加息
加油

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讓風箏飛. 2017-4-14 12:43:46

想問stamp duty , air passenger departure tax , motor vehicle first registration tax 係direct tax 定indirect tax?

indirect

依啲tax 點shift 到落third party?