1111.
1) 3/4 : 9 = 1/12
2) 2/5 : 10 = 1/25
3) 11/15 : 22 = 1/30
4) 4/7 : 2 = 2/7
5) 2 1/7 : 15 = 15/7 : 15 = 1/7
6) 1 7/9 : 8 = 16/9 : 8 = 2/9
7) 4 1/2 : 6 = 9/2 : 6 = 3/4
8) 5 1/4 : 7 = 21/4 : 7 = 3/4
1113.
1) 3 1/5 : 2 2/15 = 16/15 : 32/15 = 3/2 = 1 1/2
2) 1 7/8 : 4 1/6 = 15/8 : 25/6 = 9/20
3) 6 1/2 : 1 6/7 = 13/2 : 13/7 = 7/2 = 3 1/2
4) 6 2/3 : 2 7/9 = 20/3 : 25/9 = 12/5 = 2 2/5
5) 5 3/11 : 2 7/11 = 58/11 : 29/11 = 2
6) 5 1/3 : 3 5/9 = 9/3 : 32/9 = 9/32
7) 5 5/14 : 2 1/7 = 75/14 : 15/7 = 5/2 = 2 1/2
8) 6 2/5 : 1 7/9 = 32/5 : 16/9 = 18/5 = 3 3/5