5
1 and 2/5 cups.....There are 140g in one cup. 80grams are left after you subtract that, so, therefore, the answer is 1 and 2/5 cups.
4.5 gallons left over.
three gallons
Subtract.
Either three of the 16oz bags of flour and you will have a cup and a half of flour left over or one of the 5lbs bags.
10 cups left
subtract
3 eighths. three fourths is the same as six eighths, so subtract your 3/8 and you have 3/8 left
There are 128 fluid ounces in a gallon. Therefore, there are 6.4 20-ounce bottles in a gallon.
There are 16 cups in a gallon, and 8 pints in a gallon.
If your question is that you have four gallons of cider and you are going to serve it in eight oune cups, will you have enough to serve to 30 people; then the answer is yes. You would have enough to serve 30 peopole 2 servings each and still have cider left.