搜搜考试网经济学问题,主要是不确定使用provider A时的consumer surplus~
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经济学问题,主要是不确定使用provider A时的consumer surplus~
Suppose that a friend of yours,Helen,is considering two providers of mobile services.
Provider A charges $75 per month for the service regardless of the number of phone calls made.Provider B does not have a fixed fee but instead charges $0.50 per minute for phone calls.Your friend’s monthly demand for minutes of calling is given by the equation:Qd=200–100P,where P is the price of a minute.
Question:How much consumer surplus would she obtain with each provider?
Suppose that a friend of yours,Helen,is considering two providers of mobile services.
Provider A charges $75 per month for the service regardless of the number of phone calls made.Provider B does not have a fixed fee but instead charges $0.50 per minute for phone calls.Your friend’s monthly demand for minutes of calling is given by the equation:Qd=200–100P,where P is the price of a minute.
Question:How much consumer surplus would she obtain with each provider?
provider A时的consumer surplus:
200*2/2-75=125 (最高需求=200）
provider B时的consumer surplus:
(p=0.5 q=150 p=2 q=0)
(2-0.5)*150/2=112.5
200*2/2-75=125 (最高需求=200）
provider B时的consumer surplus:
(p=0.5 q=150 p=2 q=0)
(2-0.5)*150/2=112.5
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