200x10%/5%-200
=400-200
=200克
有200克含盐率是10%的盐,现在需要加水稀释成含盐率是5%的盐水,需要加水多少克?
有200克含盐率是10%的盐,现在需要加水稀释成含盐率是5%的盐水,需要加水多少克?
数学人气:611 ℃时间:2019-12-07 13:24:23
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