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ZX-6B7128DA2DPSAT10 P2 · 第 18 题
PSAT10 P2 · 原库模块 3 · Q18 原库参考解析
Objects R and S each travel at a constant speed. The speed of object R is half the speed of object S. Object R travels a distance of 4x inches in y seconds. Which expression represents the time, in seconds, it takes object S to travel a distance of 24x inches?
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