Find the missing number to complete the proportion.
1. 12 players to a team, 24 players to ___ teams
2. 7 is to 12 as 21 is to
3. 30 km in 5 hours, ___ kilometers in 7 hours
4. 6 notebooks cost php36, 13 notebooks cost ___
5. 28 is to 16 as ___ is to 8
6. 5 is to 9 as ___ is to 45
7. 4 is to ___ as 10 is to 15
8. ___ is to 5 as 15 is to 25
9. 45 words typed in 3 minutes, 60 words typed in ___ minutes
10. 75 apples to 3 boxes, ___ apples to 2 boxes