04.0 Percentages: Selling Problems (HTML5 Version)

Apply percentage changes to solve simple selling problems. 中文版：[url]32888 百分數：買賣問題[/url] Anthony Or GeoGebra Institute of Hong Kong

KK Ip — 22. mar. 2016 - 13.19

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Bygget på: Percentages: Selling Problems, Profit & Loss
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