如果a÷=b÷30=c÷(a、b、c均不为0),这三个数从小到大的排列是 < < .
÷0.8= :16==0.75= %
0.35== :20= %
= %= :4=.
12÷ =0.75= :32= :20= %= 折.
= :24== %