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ZX-7F660C209B2025年9月美国B卷 · 第 3 题
2025年9月美国B卷 · 原库模块 2 · Q3 原库参考解析
\( 32x+81y=290 \)
The given equation represents the volume of mulch x, in cubic feet, and the volume of soil y, in cubic feet, in a mixture of mulch and soil that weighs 290 pounds. If the volume of soil in the mixture is 2 cubic feet, what is the volume of mulch in the mixture, in cubic feet?
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