116问答网 > 有含盐20%盐水150千克,要使含盐率降为5%,需加水多少千克?

有含盐20%盐水150千克,要使含盐率降为5%,需加水多少千克?

2025-03-16 15:56:34
推荐回答（2个）
回答1：

150×20%=30千克 则含盐30千克
30÷5%=600千克
600-150=450千克

答：需加水450千克

回答2：

盐水中含盐的质量为：150*20%=30
稀盐水的质量为：30/5%=600
需加入的水的质量为：600-150=450

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