[請益] 有關tax revenue

[ytyt5239 (ytyt)]

assume the price of gasoline is 2.4 per gallon and the equilibrium quantity of
gasoline is 12 million per day with no tax on gasoline . Starting from this
inotial situation,which of the following scenarios would result in the largest
deadweight loss?

A 10 percent increase in the price of gasoline reduces the quantity of gasoline
demanded by 2 percent and it increses QS by 7 percent. The tax is 0.4 per gallon

B 10 percent increase in the price of gasoline reduces QD by 1 percent and it
increases QS by 8 percent. The tax is 0.35 per gallon

我想知道是否價格與數量變化可代表整條斜率？斜率可代表某條需求縣Or供給線的彈性？
而整條線的彈性可稱the price elasity of demand/supply?還是要線上的點才行?

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→ arnys:畫圖求面積，漲價看QD減少*價格增加的三角形面積為DWL
推 ChrisOvO:需求或供給彈性的構成中包含斜率，但不能說斜率就是彈性
→ ChrisOvO:而線上的每ㄧ點都有自己的彈性值
→ ytyt5239:arnys你講的這我知道喔，但我怎知道QD減少多少呢?答案是?
→ ytyt5239:謝CHRIS
→ arnys:英文有什麼問題嗎 ?
→ ytyt5239:??英文完全沒問題喔，我是想知道詳細過程，並且知道答案