作者floyd1014 (坚持到最後)
看板Economics
标题[考试] 关於弹性与订价
时间Sat Feb 7 11:45:13 2009
来源: 96 年度研究所考
科目: 经济学
问题: The demand for mobile homesin Azerpjama, a small, oil-rich sheilkdom,
has been estimated to be Qd = 250,000 －35P.If this relationship
remains approxidmately valid in the future:
a.How many mobile homes would be demanded at a price of $2,000?$4,000?
b.What is the arc price elasticity of demand between $2,000 and $4,000?
c.What is the point price elasticity of demand at $2,000 and $4,000?
d.If 25,000 mobile homes were sold last year, what would you expect the
average price to have been?
我的想法:
a.b.c. 这3题没有问题 , 问题在於d小题 .
我认为条件不够无法解这题 , 要求平均定价的话应该要用弧弹性 .
但是 , 他只给我ㄧ个条件应该是无法求解才对 .
参考答案
高X 大X 陈X 的答案都为
当Q = 25000时 , P = 1/35﹙250000－25000﹚
= 6428.5
我觉得怪怪的 , 这不是说在Q = 25000时的需求价格 , 怎麽会说是预期的
平均价格 .
恳请帮忙解惑 , 谢谢 !
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