I would use 150 cans
10
I would NEVER feed guests canned beans. -Fresh are tastier, healthier and only a fraction more costly.
a 10 lb can of green beans will feed 50 people with 3 oz portions.
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.
You can feed 96 people an average serving of 4 ounces.
I would use 25 pounds of fresh green beans for 100 people
You need about 10 twenty eight ounce cans
Lennie and George share one can of beans.
17 cans
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.
A half a cup of baked beans is a serving. To serve 100 people, you would need about 50 cups of baked beans. You might want to make a little more to account for people taking more than one serving.