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2025年8月美国A卷 · 第 4 题

2025年8月美国A卷 · 原库模块 1 · Q4 原库参考解析

In 2010, a skating team had a total of 51 skaters, each classified as either advanced or intermediate. From 2010 to 2020, the number of advanced skaters on the team increased by approximately 59%, and the number of intermediate skaters on the team increased by approximately 48%. The total number of skaters on the team increased by approximately 53%. Which equation best represents this situation, where a represents the number of advanced skaters on the team in 2010 and b represents the number of intermediate skaters on the team in 2010?
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