某车间今天的出勤率是95%,出勤人数与缺勤人数的比是 : .
= %= ÷20=0.35= :40.
0.75== ÷8= %= 成数.
3÷ =× =5: =1.25=.
= .
x除以y的商是,y与x的比是 .