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2025年8月国际A卷 · 第 3 题

2025年8月国际A卷 · 原库模块 1 · Q3 原库参考解析

Anton is selling toys from his toy collection. When he started selling the toys, there were 2,800 toys in the collection. At the end of each week for 3 weeks after Anton started selling the toys, the number of toys in the collection had decreased by \( \frac{1}{2} \) of the toys in the collection at the end of the previous week. Which equation gives the number of toys, c, in the collection w weeks after Anton started selling the toys, where \( 0≤w<3 \) ?
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