michael writes down 4 different factors of 60.

michael writes down 4 different factors of 60.

he adds the factors together he gets a number greater than 20 but less than 35.

what 4 factors could michael have written down?

1. 1 + 2 + 3 + 20 = 26

2. 1 + 2 + 5 + 20 = 28

3. 1 + 2 + 6 + 12 = 21

4. 1 + 2 + 6 + 20 = 29

5. 1 + 2 + 10 + 12 = 25

6. 1 + 2 + 10 + 20 = 33

7. 1 + 3 + 5 + 12 = 21

8. 1 + 3 + 5 + 20 = 29

9. 1 + 3 + 6 + 12 = 22

10. 1 + 3 + 6 + 20 = 30

11. 1 + 3 + 10 + 12 = 26

12. 1 + 3 + 10 + 20 = 34

13. 1 + 5 + 6 + 10 = 22

14. 1 + 5 + 6 + 12 = 24

15. 1 + 5 + 6 + 20 = 32

16. 1 + 5 + 10 + 12 = 28

17. 1 + 6 + 10 + 12 = 29

18. 2 + 3 + 5 + 12 = 22

19. 2 + 3 + 5 + 20 = 30

20. 2 + 3 + 6 + 10 = 21

21. 2 + 3 + 6 + 12 = 23

22. 2 + 3 + 6 + 20 = 31

23. 2 + 3 + 10 + 12 = 27

24. 2 + 5 + 6 + 10 = 23

25. 2 + 5 + 6 + 12 = 25

26. 2 + 5 + 6 + 20 = 33

27. 2 + 5 + 10 + 12 = 29

28. 2 + 6 + 10 + 12 = 30

29. 3 + 5 + 6 + 10 = 24

30. 3 + 5 + 6 + 12 = 26

31. 3 + 5 + 6 + 20 = 34

32. 3 + 5 + 10 + 12 = 30

33. 3 + 6 + 10 + 12 = 31

34. 5 + 6 + 10 + 12 = 33

Factors of 60 are  1 2 3 4 5 6 10 12 15 20 30 60

Pick four that you like that will fit the problem:

here is one set    2  3   5  15      there are a lot more.....