来源: 93中山财管 科目:经济学 问题: The price floor of rice is set at P1 by government. Under P1, the farmers will then produce Y tons of rice. Under P1, however, the consumers will only demand X tons of rice (X<Y). With Y tons of rice production, to clear the market, the price needs to rice needs to reduce to P0. If we know, P1*(Y-X)>(P1-P0)*Y, then the elasticity of demand between P0 and P1 is ? A.greater than 1 B.smaller than 1 C.equal to 1 D. uncertain of its range 答案是A 我的想法: 本来想直接把给的条件移项 变成点弹性(P1/Y)*[(Y-X)/(P1-P0)]>1 可是在Y数量的需求价格是P0 不是P1 总觉得好像哪里有错... 上来向板上的乡民请教一下 谢谢~ -- 　在我宅宅的外表下 其实藏着一颗... 更宅的心~ --

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