The answer is 20 because if you divide 15:20 by 5, you get 3:4. hope this helps!
Answer:
the 3rd one,
Step-by-step explanation:
Because it is the 3rd one
1.) 3p
2. -b+3
3. 6x
4. -3p
5. -4v
6. r
7. 9-4r
8. 4b+2
9. 14n
10. 4b+2
11. 35n+45
12. -82v
13. 38n
14. 38x