—盆水中放入10克盐,再倒人浓度为5%的盐水200克,配成浓度为2. 5%的盐水,问厚来这盆水有多少克?( ) A. 500 B. 560 C. 590...

作者: tihaiku 人气: - 评论: 0
问题 —盆水中放入10克盐,再倒人浓度为5%的盐水200克,配成浓度为2. 5%的盐水,问厚来这盆水有多少克?( ) A. 500 B. 560 C. 590 D. 630
选项
答案 C
解析 (10 + 200X5%)/2. 5%-(10 + 200)=590(克)。故选 C。

相关内容:水中,放入,10克盐,再倒人,浓度,盐水,200克,问厚,盆水,590...

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