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15问答网 > 一件羽绒服降价10%后售出价是270元，设原价x元，得方程

一件羽绒服降价10%后售出价是270元，设原价x元，得方程

A. x（1－10%）=270－xB. x（1+10%）=270C. x（1+10%）=x－270D. x（1－10%）=270

2025-03-28 07:14:31

推荐回答（1个）

回答1：

答案D
分析：首先理解题意找出题中存在的等量关系：原价（1-10%）=270元，根据此列方程即可．
解答：解：设原价为x元，则原价x元降价10%即为x（1-10%）元，
因此可列方程为：x（1-10%）=270，
故选D．
点评：列方程解应用题的关键是找出题目中的相等关系，有的题目所含的等量关系比较隐藏，要注意仔细审题，耐心寻找．

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