0.12:0.04,0.8:1.4,3/7:4/7,0.09:0.05和4:7,6:2,9:12,2.7:1.5哪个数组成比例?

问题描述:

0.12:0.04,0.8:1.4,3/7:4/7,0.09:0.05和4:7,6:2,9:12,2.7:1.5哪个数组成比例?

0.12:0.04和6:2,
0.8:1.4和4:7,
3/7:4/7,和9:12
0.09:0.05和2.7:1.5
这四个数组成比例