120克盐水中含有盐20克,水与盐水的比是
问题描述:
120克盐水中含有盐20克,水与盐水的比是
答
(120-20)/120=100/120=5/6
答
100/120=5/6
120克盐水中含有盐20克,水与盐水的比是
(120-20)/120=100/120=5/6
100/120=5/6