First we know that one hamburger bun package is 8. so we multiply that by 3 to get 24. BUT, you need 2 pieces for a hamburger bun, cause each patttie needs two buns: 1 on top and one on bottom. We multiply 3 by 2 = 6. and you need 2 for That is 24 people. However, we still need patties. We multiply 6 by 4 to get 24. Thats 24 people. 4 + 6 = 10. So 7 packages in total.