Answer:
60 parts water and 20 parts mix
Step-by-step explanation:
adding the original values gives you a total of 8 parts juice and mix combinded. The end goal was 80 parts. 8 * 10 = 10
with that logic, you can multiply the 6 by 10 and get 60 and the 2 by 10 and get 20 for a grand total of 80 parts