Math Problem Statement
某体育用品商店购进一批滑板,每件进价为100元,售价为130元,每星期可卖出80件.商家决定降价促销,根据市场调查,每降价5元,每星期可多卖出20件,(1)求商家降价前每星期的销售利润为多少元?(2)降价后,商家要使每星期的销售利润最大,应将售价定为多少元?最大销售利润是多少?
Solution
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Math Problem Analysis
Mathematical Concepts
Profit calculation
Optimization
Quadratic functions
Formulas
Profit = Revenue - Cost
Quadratic function vertex formula
Theorems
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Suitable Grade Level
Grades 10-12
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