原来定价时所期望的利润是多少元?

  • 时间:2020-05-20 15:29:31
  • 分类:数学世界
  • 阅读:161 次

数学题:一件商品原定价120元,现在打7折出售,仍可获利5%的利润。原来定价时所期望的利润是多少元?

数学题解答:此题的关键之处是弄清5%的利润是占原定价的5%,还是打7折价格的5%,根据生活中的经验,此处的5%的利润应是指原定价的5%。

先算出打七折的价格:120 × 70% = 84(元)

再算出5%的利润是多少元:150 × 5% = 6(元)

算出进货价格:84 - 6 = 78(元)

原来的利润是:120 - 78 = 42(元)

答:原来定价时所期望的利润是42元。

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