微观经济题目 英语好的进来看 suppose quantity demanded is 2000 when price is $10 and 3000 when price is $5.if a monopolist who was initially charging a price of $10 discovers a way to price discriminate (using these two price),it will be

Question

微观经济题目 英语好的进来看
suppose quantity demanded is 2000 when price is $10 and 3000 when price is $5.if a monopolist who was initially charging a price of $10 discovers a way to price discriminate (using these two price),it will be able to increase revenue from $20,000 to:
a.$35,000 by charging consumers with more elastic demands only $5 and keeping the price for consumers with less elastic demands at $10
b.$35,000 by charging consumers with less elastic demands only $5 and keeping the price for consumers with more elastic demands at $10
c.$25,000 by charging consumers with less elastic demands only $5 and keeping the price for consumers with more elastic demands at $10
d.$25,000 by charging consumers with more elastic demands only $5 and keeping the price for consumers with less elastic demands at $10

Answer 1

答案选择：D 达到25,000.通过对弹性较大的顾客要价5,对弹性较小的顾客定价10.
题目翻译：假设当价格为10 的时候需求量为2000,价格为5的时候需求量为3000.某垄断者初始定价为10,运用上述两种价格,通过怎样的差别定价方式能使得他们的利润大于20000.
题目解析：1.垄断monopolist表示不存在任何竞争；2.弹性越大对价格越敏感,也就是说弹性大的顾客,东西一涨价就不乐意要了；3.从5涨价到10,需求量从3000减少到1000,证明有1000的人是对价格敏感的,也就是弹性大,所以对这群人用5定价,可以保留住他们,得到利润5*1000=5000；4.价格涨到10的时候还有2000需求,表示这2000的需求是相对刚性的,也就是敏感度小,弹性小,可以对这群人保持10的定价,得到利润2000*10=20,000；5.综上,利润为5000+20000=25000