there are two kinds of sweet water A and B .a contains 270 grams of sugar and 30 grams water .B contains 400 grams of sugar and 100 grams of water.now i want to get 100 grams sweet water which is 82.5% concentrated .what is the weight of A and B respectively do we need?
人气:462 ℃ 时间:2020-02-01 06:58:47
解答
a:25g
b:75g能写出翻译和计算过程吗?快些哦?0.9a+0.8b=82.5%*100a+b=100翻译是:有两种糖水,a和b,a含有270g糖,30g水。b含有400g糖,100g水。求,要100g糖水中的含糖量是82.5%,则应各加多少a和b。
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