12 : 20 = 6 : 10 = 3 : 5
2 to 1
1 : 6
5:11
18 to 25
21:6::7:2
6/14 = 3/7
5 to 10 = 1 to 2
7.2 to 10 = 72 to 100 = 18 to 25
If you mean as a ratio then it is 1/2
ratio of 6 to 10 = (?) %
Factor out the 6, 6*1 : 6*7 as 6 appears in both sides of this ratio as a factor it can be eliminated 1 : 7 ===