中科新闻网ul是什么职业:math!!!math~~~~~~~~
来源：百度文库 编辑：中科新闻网 时间：2024/05/10 12:03:23
If two items cost c cent, how many items can be purchased for x cent?
Because two items cost c cent,
one item cost c/2 cent.
so x/(c/2)=2x/c items cost x cent.
x items
2x/c items
x/c绝对对