Answer:
1:5 is the ratio of red to white
Step-by-step explanation:
4:20 can be simplified to 1:5 by dividing by 4
5:25 can be simplified to 1:5 by dividing by 5
7:35 can be simplified to 1:5 by dividing by 7
8:40 can be simplified to 1:5 by dividing by 8