Answer:
1. 12/36
2. 4/5
3. 1/4
4. 9/24
5. 2/5
6. 20/50
7. 5/6
8. 2/4
9. 12/24
10. 10/60
11. 8/12
12.18/27
13. 3/9
14. 10/12
15. 4/8
16. 1/4
17. 5/15
18. 6/30
19. 2/3
20. 14/21
3.5m questions
4.4m answers