So,
We need to convert from gal. to c.
16 c. = 1 gal.

24 cups
The chef can get 24 cups of soup from his pot.
Answer: 19.5 gallons
Step-by-step explanation:
Hi, to answer this question, we have to use proportions:
Nathaniel buys 28 gallons of gas for $56, so the proportion is:
$56 / 28 gallons.
For $39:
$39 / x gallons
Solving for x (number of gallons)
56/28 = 39/x
x = 39 / (56/28)
x = 19.5 gallons
Feel free to ask for more if needed or if you did not understand something.