[Econ衝**] 2017 DSE 經濟科試前討論區

唉 做緊by topic past paper 都係咁錯 講緊係做緊scarcity opportunity cost嘅mc都成日錯

唔係太明點解啲題目話條友用$30000 買左樣野 而放棄買另外一樣野果陣 點解計opportunity cost會計埋30000蚊

又唔係好明點解話條友own a house 問條友bear an opportunity cost living in that house because he has paid a sum of money to buy the house 又會錯

我係上面問過野 水平lv1想拎3 果位

類似有一題印花 CE既
30個印花可以換A
20個印花換B
10個印花換C
咁你換A既成本 就係(B+C)因為你原本個30個印花係可以同時換到B同C 你放棄左既野就係(B+C)

好似去睇戲咁 睇戲既成本都要包埋戲飛錢 同埋睇戲既時間

唔知有無講錯 求指教

依條明呀 岩岩都做錯左 淨係諗highest valued option forgone 然黎以為淨係B 但其他我就真係諗唔通 都似成日般龍門咁

好亂 都唔知佢個definition想點 又話highest valued option forgone但又要計埋俾左嘅錢

1st choice: A
2nd choice: B
3rd choice: C
咁嘅情況 你揀A嘅話 OC就會係B嘅value

但如果題目淨係比左一個choice(A)你
問你揀A嘅OC係乜
咁就會係揀A背後所出嘅錢 時間 同其他non-monetary cost

同樣道理
有個人用$30000買左樣野(當係A)個題
1st choice: A
2nd choice: B
但當B對買野個個人黎講嘅value係細過$30000嘅時候 就會變左：
1st choice: A
2nd choice: $30000 cash
3rd choice: B
咁OC就會係$30000
而當個$30000+value of B=value of A嘅時候
咁你揀A 已經係放棄左both B and $30000 cash
所以 當題目冇講到明value of B係幾多嘅時候 你唔知B定$30000 cash係個個人嘅2nd choice(highest-valued option forgone) 所以OC就會包埋個$30000

有個人own a house個題
paid a sum to buy a house已係sunk cost
唔計入OC
真正嘅OC係rental income forgone(自往緊冇得租比人收租)

有錯請指正

好清晰

唉 做緊by topic past paper 都係咁錯 講緊係做緊scarcity opportunity cost嘅mc都成日錯

唔係太明點解啲題目話條友用$30000 買左樣野 而放棄買另外一樣野果陣 點解計opportunity cost會計埋30000蚊

又唔係好明點解話條友own a house 問條友bear an opportunity cost living in that house because he has paid a sum of money to buy the house 又會錯

我係上面問過野 水平lv1想拎3 果位

類似有一題印花 CE既
30個印花可以換A
20個印花換B
10個印花換C
咁你換A既成本 就係(B+C)因為你原本個30個印花係可以同時換到B同C 你放棄左既野就係(B+C)

好似去睇戲咁 睇戲既成本都要包埋戲飛錢 同埋睇戲既時間

唔知有無講錯 求指教

依條明呀 岩岩都做錯左 淨係諗highest valued option forgone 然黎以為淨係B 但其他我就真係諗唔通 都似成日般龍門咁

好亂 都唔知佢個definition想點 又話highest valued option forgone但又要計埋俾左嘅錢

1st choice: A
2nd choice: B
3rd choice: C
咁嘅情況 你揀A嘅話 OC就會係B嘅value

但如果題目淨係比左一個choice(A)你
問你揀A嘅OC係乜
咁就會係揀A背後所出嘅錢 時間 同其他non-monetary cost

同樣道理
有個人用$30000買左樣野(當係A)個題
1st choice: A
2nd choice: B
但當B對買野個個人黎講嘅value係細過$30000嘅時候 就會變左：
1st choice: A
2nd choice: $30000 cash
3rd choice: B
咁OC就會係$30000
而當個$30000+value of B=value of A嘅時候
咁你揀A 已經係放棄左both B and $30000 cash
所以 當題目冇講到明value of B係幾多嘅時候 你唔知B定$30000 cash係個個人嘅2nd choice(highest-valued option forgone) 所以OC就會包埋個$30000

有個人own a house個題
paid a sum to buy a house已係sunk cost
唔計入OC
真正嘅OC係rental income forgone(自往緊冇得租比人收租)

有錯請指正

好清晰

其實opportunity cost = explicit cost + implicit cost?
Implicit cost 同 opportunity cost 係有啲混亂

In a one-man economy,there is no competition for economic goods.
啱唔啱

唉 做緊by topic past paper 都係咁錯 講緊係做緊scarcity opportunity cost嘅mc都成日錯

唔係太明點解啲題目話條友用$30000 買左樣野 而放棄買另外一樣野果陣 點解計opportunity cost會計埋30000蚊

又唔係好明點解話條友own a house 問條友bear an opportunity cost living in that house because he has paid a sum of money to buy the house 又會錯

我係上面問過野 水平lv1想拎3 果位

類似有一題印花 CE既
30個印花可以換A
20個印花換B
10個印花換C
咁你換A既成本 就係(B+C)因為你原本個30個印花係可以同時換到B同C 你放棄左既野就係(B+C)

好似去睇戲咁 睇戲既成本都要包埋戲飛錢 同埋睇戲既時間

唔知有無講錯 求指教

依條明呀 岩岩都做錯左 淨係諗highest valued option forgone 然黎以為淨係B 但其他我就真係諗唔通 都似成日般龍門咁

好亂 都唔知佢個definition想點 又話highest valued option forgone但又要計埋俾左嘅錢

1st choice: A
2nd choice: B
3rd choice: C
咁嘅情況 你揀A嘅話 OC就會係B嘅value

但如果題目淨係比左一個choice(A)你
問你揀A嘅OC係乜
咁就會係揀A背後所出嘅錢 時間 同其他non-monetary cost

同樣道理
有個人用$30000買左樣野(當係A)個題
1st choice: A
2nd choice: B
但當B對買野個個人黎講嘅value係細過$30000嘅時候 就會變左：
1st choice: A
2nd choice: $30000 cash
3rd choice: B
咁OC就會係$30000
而當個$30000+value of B=value of A嘅時候
咁你揀A 已經係放棄左both B and $30000 cash
所以 當題目冇講到明value of B係幾多嘅時候 你唔知B定$30000 cash係個個人嘅2nd choice(highest-valued option forgone) 所以OC就會包埋個$30000

有個人own a house個題
paid a sum to buy a house已係sunk cost
唔計入OC
真正嘅OC係rental income forgone(自往緊冇得租比人收租)

有錯請指正

好清晰

其實opportunity cost = explicit cost + implicit cost?
Implicit cost 同 opportunity cost 係有啲混亂

上面邊個係implicit cost 我睇嗰陣唔理依啲

In a one-man economy,there is no competition for economic goods.
啱唔啱

One-man economy好似係冇competition

In a one-man economy,there is no competition for economic goods.
啱唔啱

One-man economy好似係冇competition

No competition but scarcity

In a one-man economy,there is no competition for economic goods.
啱唔啱

One-man economy好似係冇competition

No competition but scarcity

使唔使記彈性點計

使唔使記彈性點計

條公式一大舊

使唔使記彈性點計

條公式一大舊

要

使唔使記彈性點計

條公式一大舊

要

Profit tax係progressive/regressive tax？
同香港嘅indirect tax係咪全部都係regressive

Profit tax係progressive/regressive tax？
同香港嘅indirect tax係咪全部都係regressive

香港嘅Profits tax係proportional
因為無論間firm賺1億定100億
Sole proprietorship同partnership都係交15%
Limited company都係交16.5%

Profit tax係progressive/regressive tax？
同香港嘅indirect tax係咪全部都係regressive

香港嘅Profits tax係proportional
因為無論間firm賺1億定100億
Sole proprietorship同partnership都係交15%
Limited company都係交16.5%

Profit就係tax rate條式既taxable income?
Tax payment/taxable income = tax rate
唔該晒outliers巴

想問下依題 雖然之前講過 但係好似冇下文
一齊討論下
40. Which of the following situations may lessen fiscal deficit and a trade at the same time?
(1) a reduction in nominal interest rate
(2) a depreciation of the economy’s currency
(3) an increase in income tax
A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1), (2) and (3)

答案係C
(1)唔啱係因為fiscal嗰部分啱 但trade就錯
nominal interest rate decrease會lower the cost of earlier consumption
之後C increase >Y increase>tax revenue increase>fiscal deficit will lessen
而trade嗰邊
因為C增加後Y增加 令import多左
(X-M)會再細左 trade deficit will be more worse
我想知我有冇理解錯

使唔使記彈性點計

條公式一大舊

要

唔難記啵
理解下條式點解係咁先
我地都知
Elasticity>1 =elastic
Elasticity<1 =inelastic
但係點解呢?
條式就咁嘅
%change of Qd / %change of price
當>1(elastic)嗰陣 Qd 陏得勁過Price 因為大啲嗰個係分子 所以咪>1
<1(inelastic) 就反之亦然
有錯請指教

想問下依題 雖然之前講過 但係好似冇下文
一齊討論下
40. Which of the following situations may lessen fiscal deficit and a trade at the same time?
(1) a reduction in nominal interest rate
(2) a depreciation of the economy’s currency
(3) an increase in income tax
A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1), (2) and (3)

答案係C
(1)唔啱係因為fiscal嗰部分啱 但trade就錯
nominal interest rate decrease會lower the cost of earlier consumption
之後C increase >Y increase>tax revenue increase>fiscal deficit will lessen
而trade嗰邊
因為C增加後Y增加 令import多左
(X-M)會再細左 trade deficit will be more worse
我想知我有冇理解錯

岩

講翻先，份卷大致完成，有未出現過既concept，有翻炒pastpaper既，有分析有背書 (希望我無出錯野，有既希望大家講翻)，講真唔難既，但大家表達上可能會覺得有困難(aka 1999)，我預個curve唔會同dse差太遠。

我做一次之後就會放出黎 中文版等多一陣

使唔使記彈性點計

條公式一大舊

要

唔難記啵
理解下條式點解係咁先
我地都知
Elasticity>1 =elastic
Elasticity<1 =inelastic
但係點解呢?
條式就咁嘅
%change of Qd / %change of price
當>1(elastic)嗰陣 Qd 陏得勁過Price 因為大啲嗰個係分子 所以咪>1
<1(inelastic) 就反之亦然
有錯請指教

Price elasticity of demand: how reponsive is the quantity demanded when price change

Btw你地寫彈性條式出黎睇下

Btw你地寫彈性條式出黎睇下

(%change in Qd)/(%change in price)
唔啱？

Btw你地寫彈性條式出黎睇下

(%change in Qd)/(%change in price)
唔啱？

姐係
((Q'-Q)/Q)/(P'-P)/P)？

有幾多巴絲係咁學？

講翻先，份卷大致完成，有未出現過既concept，有翻炒pastpaper既，有分析有背書 (希望我無出錯野，有既希望大家講翻)，講真唔難既，但大家表達上可能會覺得有困難(aka 1999)，我預個curve唔會同dse差太遠。

我做一次之後就會放出黎 中文版等多一陣

辛苦了

感謝

我有d期待你地點答E2

條題目我上lecture個陣見到既，改左d用字，我考dse個陣都只係見過一次出面mock咁出。