2. 职称英语
  3. Suppose QD=100-2P, and QS=-50+3P.(a)What is the original market equilibrium pr

Suppose QD=100-2P, and QS=-50+3P.(a)What is the original market equilibrium pr

游客2025-06-21  15
问题  Suppose QD=100-2P, and QS=-50+3P.
(a)What is the original market equilibrium price and quantity?
(b)The government imposes a tax of ＄1 per unit. Compute the after-tax equilibrium. What are the new equilibrium price and quantity? How much revenue does the government collect?
选项
答案 (a)Setting QD=QS, the original equilibrium is the solution to 100-2P=-50+3P or P* =＄30 and Q*=40.
(b)After a ＄1 tax is imposed, we can solve for the price received by sellers: 100-2(PS+1)= -50+ 3PSor PS* = 148/5 =＄29.60. The new quantity is Q*=38.8. The government collects ＄×38.8=＄38.80.
解析
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