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ZX-82D275F2BC2025年12月国际A卷 · 第 10 题
2025年12月国际A卷 · 原库模块 2 · Q10 原库参考解析
\( 0.10x+0.20y=0.17(x+y) \)
The equation gives a volume x, in gallons, of a 10% saltwater solution that could be mixed with a volume y, in gallons, of a 20% saltwater solution to produce a 17% saltwater solution. According to this equation, what volume, in gallons, of the 20% saltwater solution could be mixed with 75.0 gallons of the 10% saltwater solution to produce a 17% saltwater solution? (Assume that the volume of the mixture is the sum of the volumes of the two solutions before they were mixed.)
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