A gallon will serve sixteen (16) - based on 8 ounce servings.
One can will serve about 26 people. 5 cans should cover you. That is called a #10 can, and holds 13 cups. A serving of vegetables is one half cup.
it can serve one person
One gallon of orange juice is equal to 128 ounces. Each person will have about an 8 oz cup of juice, so one gallon will serve 16 people. You would need 2 gallons to provide this amount with two servings left over. If this is a real occasion, you should purchase an extra quart to be sure there is enough.
One gallon
One US gallon is 3785.4cm3
One 4-quart to one gallon.
One US gallon is 0.3785 decaliters.
1 gallon equals 1 gallon.
One gallon is equivalent to 16 cups.
8 pints per gallon.
One US gallon is about 3785mL
3.785 Litres in a US gallon.