the question is down below!!

Answer: 1:2
Step-by-step explanation: you have to subtract 80 from 120 to get 40. Then you would have the ratio 40:80. Then when you simplify it would be 1:2.
The visual work:
120-80=40
40:80=1:2
i know u didnt need the explanation and all that but just wanted to show you how i got it- lol
Answer:
Answer down below!
Step-by-step explanation:
If there were 80 blue marbles, but the amount of red marbles isn't stated. First, you need to figure out how many there are. 80 + Number = 120
Number = 40
The ratio is 80:40
Cutting that in half would be 40:20
We're getting closer
20:10
This is starting to get pretty obvious what our answer could be!
If we kept cutting we would get 2:1
Your answer is 2:1!!
Sorry if I am wrong!