1) 11/15: 3/8 = 11/15* 8/3=88/45 = 1 43/45
2) 6/35: 18/25 = 6/35* 25/18= 5/21
3) 12/55: 48/77 = 12/55* 77/48= 7/20
4) 21/40 : 3/4= 21/40* 4/3 = 7/10
5) 27/50 : 9/25 = 27/50* 25/9= 3/2 = 1 1/2
6) 63/64: 45/56 = 63/64* 56/45 = 49/40 = 1 9/40
7) 5/8 : 5/32 = 5/8 * 32/5 = 4
8) 14/55 : 1/5 = 14/55 * 5/1 =14/11 = 1 3/11