某商品卖出价比进货价增加,则进货价比卖出价少 .
%=0.25= ÷16= :32.
÷ =0.6= :15= %= 折.
= ÷8=0.125= %=5: .
6:10=12: == ÷40= (填小数)= %
:8=0.75 8: =0.5.