2012 AP Microeconomics微观经济真题系列之简答题免费下载

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2012 AP Microeconomics Free-Response Questions Free Download

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1)Steverail, the only provider of train service operating between two cities, is currently incurring economic losses.

  1. Using a correctly labeled graph, show each of the following.
    1. Steverail’s loss-minimizing price and quantity, labeled Pm and Qm , respectively
    2. The area of economic losses, shaded completely
    3. The allocatively efficient quantity, labeled Qe
  2. If Steverail raised the price above Pm identified in part (a)(i), would total revenue increase, decrease, or not change? Explain.
  3. Assume a per-unit subsidy is provided to Steverail.
    1. Will Steverail’s quantity increase, decrease, or not change? Explain.
    2. Will consumer surplus increase, decrease, or not change?
  4. Assume instead that a lump-sum subsidy is provided to Steverail. For the short run, answer the following.
    1. Will the deadweight loss increase, decrease, or not change? Explain.
    2. Will Steverail’s economic losses increase, decrease, or not change?

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