How any pounds of baby red potates to feed 100 people?

To feed 100 people, you'll typically need about 1/3 to 1/2 pound of baby red potatoes per person, depending on the serving style and if they are the main dish or a side. This amounts to approximately 33 to 50 pounds of baby red potatoes in total. It's always a good idea to adjust based on your specific guests and the rest of the menu.