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ZX-BEDC9D48BD2023年5月练习卷(易) · 第 18 题
2023年5月练习卷(易) · 原库模块 1 · Q18 原库参考解析
In 2010, a skating team had a total of 43 skaters, each classified as either advanced or intermediate. From 2010 to 2020, the number of advanced skaters on the team decreased by approximately 15%, and the number of intermediate skaters on the team decreased by approximately 22%. The total number of skaters on the team decreased by approximately 19%. 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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