30 : 5 =	8 : 4 =
9 : 3 =	4 : 1 =
3 : 1 =	20 : 5 =
18 : 3 =	9 : 3 =
6 : 2 =	4 : 2 =
10 : 5 =	6 : 2 =
20 : 5 =	12 : 4 =
45 : 5 =	10 : 2 =
10 : 5 =	10 : 2 =
6 : 3 =	18 : 2 =
6 : 2 =	24 : 6 =
6 : 2 =	9 : 3 =
24 : 8 =	25 : 5 =
10 : 5 =	16 : 2 =