1. Find the constant of proportionality (K).
K=2.5 because 5 divided by 2 is 2.5. You can even check this by dividing 12.5 by 5 and still get 2.5
2. Write the proportional equation using the table below.
(1 bottle =2.5 liters)
6 bottles X 2.5 liters
3. How many liters of soda can 6 bottles hold?
6 bottles = 15 liters
Answer: 15