以下是引用PopularKing在2003-10-12 4:00:00的发言:67) 一件新产品的定价规律是:取(成本的1.2倍)和(成本数+3000)中的低者。某新产品的成本由p变到h,问定价改变了多少? (1) h=1.05p (2) p>16000 作者答案及思路:C。 remeo评价意见:应该是A。根据题目条件取1.2P和P+3000中的较小者.根据1可得1.05P=P+3000,从而解出P,H也可以解出,再相减即可.条件2可以使1.2P>P+3000,即定价改变了0.2P,但具体算不出来.大家讨论,我这题做的可能不对. 更新: -------------------------------------------------- I think the ans. should be E. From A alone, we can not deduct anything about the selling price, for we do not know the cost of either h or P. From B, we can deduct that 定价改变 of 1.2P > 3000, combine it with A, we know 定价P = P + 3000 定价H = H + 3000 定价改变 = 定价H -定价P = (H + 3000) - (P + 3000) = H - P = UNKNOWN. 
up,AGREE |