Two and one half US gallons is 40 cups.
8 cups
8 cups 1 gallon = 16 cups 1 cup = 0.06 gallon
half a gallon
32 1 gallon = 16 cups 1 cup = 0.06 gallon
8 cups 1 gallon = 16 cups 1 cup = 0.06 gallon
24 cups 1 gallon = 16 cups 1 cup = 0.06 gallon
16 half cups in half a gallon
24 cups 1 gallon = 16 cups 1 cup = 0.06 gallon
32 half cups 1 gallon = 16 cups 1 cup = 0.06 gallon
1 gallon is 16 cups