How many slabs of ribs to feed 150?

To feed 150 people, you typically need about 1/2 to 1 slab of ribs per person, depending on the serving size and whether other dishes are being served. This means you would need approximately 75 to 150 slabs of ribs. If serving other sides or proteins, you can lean towards the lower end of that range. Always consider the appetite of your guests and adjust accordingly.