Depends on what else you are serving. One site I looked at suggested abt 1/2 c per person as a side with about 4 people per lb of pork and beans. So that would be about 20 people.
If all you are serving is baked beans, I'd halve the number to about 10 - depending on their appetites.
However, if you are feeding teenage boys, I'd say this should be enough for 2.
As a part of a main entree, I would make 5 pounds of beans
six pounds of dry beans
You need 25 pounds of green beans
To determine how many pounds of pinto beans you need to serve 75 people, you first need to calculate the serving size per person. A typical serving of cooked pinto beans is about 1/2 cup. With 75 people, you would need approximately 37.5 cups of cooked beans. One pound of dried pinto beans yields about 6 cups when cooked, so you would need roughly 6.25 pounds of dried pinto beans to serve 75 people.
Each pound bag of dry pinto beans contains about 12 (½ cup) servings after cooking. Eight pounds of pinto beans will therefore serve 96 people.
To determine the amount of green beans needed to serve 200 people, we first need to establish the serving size per person. Let's assume a standard serving size of 4 ounces of green beans per person. This means for 200 people, we would need 800 ounces of green beans. Converting 800 ounces to pounds (1 pound = 16 ounces) gives us 50 pounds of green beans needed to serve 200 people.
2 pounds
~27.34
I would make 12 pounds
Five pounds four persons per pound for regular serving.
About 125 pounds of beans
I would serve 11 pounds