30
you would need about 10,000lbs of tato to feed that many booties
To feed 300 people mashed potatoes, you'll typically want to plan for about 1/2 cup to 3/4 cup per person. This means you would need approximately 150 to 225 cups of mashed potatoes in total. Since there are about 16 cups in a gallon, this translates to about 9 to 14 gallons of mashed potatoes. Adjust according to your guests' preferences and other menu items.
10 to 12 potatoes,better to have alittle left over than not enough.
About 80 pounds
I would do 4.5 pounds of potaato
To determine how many gallons of canned potatoes are needed to feed 100 people, consider that a typical serving size is about half a cup, which is approximately 4 ounces. One standard can of potatoes usually contains about 15 to 20 ounces, so it can serve about 3 to 4 people. Therefore, you would need around 25 to 30 cans to feed 100 people, which translates to roughly 2 to 2.5 gallons of canned potatoes.
10
There are 16 cups in a gallon. So your peas would serve 32 people.
I would make 38-40 pounds
It depends on the portion size, but typically one gallon of coleslaw can feed about 20-24 people as a side dish.
Two gallons