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乔老师买了30个书包和45个文具盒，一共花去多少元？书包58.5元/个，文具盒12.6元/个。？

开发者 https://www.devze.com 2023-01-07 16:02 出处：网络 作者：开发技巧
Ohno_Sika 2021-12-27 18:43 58.5×30＋12开发者_运维问答.6×45＝2322
相关专题：书包买了文具盒
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