Answer:
I would say 20 ounces of peach juice would be needed.
Explanation:
If the guava juice is 12 ounces for 3 parts, that means that each part has to be the same amount.
12 / 3 = 4
So their is 4 ounces per part.
Now you take the 5 parts peach juice, and multiply it by 4.
5*4=20.
20 is your answer.
I hope this helped!!