0.32:0.8 1:0.25 5.6:4.2 2:0.8

问题描述:

0.32:0.8 1:0.25 5.6:4.2 2:0.8

0.32:0.8 =2:5=0.4
1:0.25=4:1=4
5.6:4.2 =4:3=4/3
2:0.8=5:2=2.5