Answer:
4. 4:3 = 20:15
5. 5:9 = 40:72
7. 7:9 = 21:27
8. 1:9 = 8:72
9. 6:1 = 12:2
10. 49:84 =7:12
11. 12:5 = 72 : 30
12. 5:35 = 1:7
13. 5:4 = 20:16
14. 2:9 = 12:54
15. 10:1 = 30:3
16. 3:5 = 21:35
17. 21:6 = 7:2
18. 5:1 = 35:7
19. 5:6 = 35:42
20. 55:60 = 11:12
Step-by-step explanation:
