Step-by-step explanation:
1) k = ¼
2) k = ⅓
3) x/y = 18/3, k = ⅙
4) x/y = 5/25, k = ⅕
5) x/y = 11/88, x/y = 3/24, k = ⅛
6) x/y = 9/21, k = 3/7
7) k = ⅖
8) k = 6
