If you had the question: Five classmates came to Dan's birthday party. This is half the number of people who came from Dan's summer camp friends, and One Third as many of relatives that came. How many people came to Dan's birthday Party? 31 The answer is 31 because after adding all the people that came, you get 30. then, after adding Dan himself, you get 31. This answer was correct for me. I hope it helps!!