Match ratio language like 'for every' to a ratio

Turn 'for every' wording into a ratio, or use a ratio to find the missing count. Keep each name in the order the question asks for.

1. For every 2 red beads, there are 5 white beads. Write the ratio of red beads to white beads as a:b.
2. There are 2 cats for every 5 dogs. Write the ratio of dogs to cats as a:b.
3. There are 2 tulips for every 5 daisies. Write the ratio of tulips to daisies as a:b.
4. For every 5 pencils, there are 3 pens. Write the ratio of pencils to pens as a:b.
5. The ratio of girls to boys is 4:3. For every 3 boys, how many girls are there?
6. The ratio of red beads to white beads is 5:4. For every 5 red beads, how many white beads are there?
7. The ratio of pencils to pens is 4:3. For every 4 pencils, how many pens are there?
8. The ratio of apples to pears is 3:4. For every 3 apples, how many pears are there?
9. There are 5 apples for every 6 pears. Write the ratio of pears to apples as a:b.
10. For every 9 red marbles, there are 8 blue marbles. Write the ratio of red marbles to blue marbles as a:b.
11. For every 5 tulips, there are 2 daisies. Write the ratio of daisies to tulips as a:b.
12. For every 3 girls, there are 4 boys. Write the ratio of boys to girls as a:b.
13. For every 17 tulips, there are 4 daisies. Write the ratio of tulips to daisies as a:b.
14. The ratio of girls to boys is 5:13. For every 13 boys, how many girls are there?
15. There are 4 red marbles for every 9 blue marbles. Write the ratio of red marbles to blue marbles as a:b.
16. For every 7 apples, there are 9 pears. Write the ratio of pears to apples as a:b.
17. For every 19 red marbles, there are 5 blue marbles. Write the ratio of blue marbles to red marbles as a:b.
18. For every 25 cats, there are 29 dogs. Write the ratio of dogs to cats as a:b.
19. There are 13 cats for every 10 dogs. Write the ratio of dogs to cats as a:b.
20. The ratio of apples to pears is 18:29. For every 29 pears, how many apples are there?