果汁糖每千克28.5元,牛奶糖每千克46.5元,现要求混合后糖的单价为每千克32元,则取的果汁糖和牛奶糖的质量比为()。A.29:7 B.7:29 C...

作者: tihaiku 人气: - 评论: 0
问题 果汁糖每千克28.5元,牛奶糖每千克46.5元,现要求混合后糖的单价为每千克32元,则取的果汁糖和牛奶糖的质量比为()。
选项 A.29:7 B.7:29 C.31:19 D.19:31
答案 A
解析 设果味糖和牛奶糖的质量比是x:y,则28.5x+46.5y=32(x+y),解得x:y=29:7。

相关内容:果汁,糖每,28.5元,46.5元,要求,混合,单价,质量

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