I would use 150 cans
a 10 lb can of green beans will feed 50 people with 3 oz portions.
10
To determine the number of institutional size cans of green beans needed to feed 100 people, we first need to establish the serving size per person. Let's assume a standard serving size of 1/2 cup of green beans per person. With 100 people to feed, that would amount to 50 cups of green beans in total. Institutional size cans typically contain around 6-7 cups of green beans, so you would need around 8-9 cans to feed 100 people a 1/2 cup serving of green beans each.
Are they only eating beans or it a single veg as part of a dinner meal.How can we give a reasonable answer if you don't give us all the facts.
To determine how many cans of green beans you need to feed 50 people, you must first decide on the serving size per person. Let's assume a typical serving size is 1/2 cup. A standard can of green beans contains about 3.5 cups. Therefore, you would need approximately 7 cans of green beans to feed 50 people a 1/2 cup serving each.
You need about 10 twenty eight ounce cans
100
presumably they are having other food also. So 10 people should use 3 can of beans
One normal size can would do 2-3 people, depending on how big a portion they want.
14 cans
10
Without knowing what kind of dish you are serving the red beans in, this will be an estimate. For straight red beans, served as a side dish, you can estimate that each person will eat approximately 1/2 c of beans. For 150 people, this is 75 cups. Each can tends to have about 1 cup worth of beans in it, so you would need 75 cans of red beans.