Okay. For a 100-person buffet barbecue, if the basic cost per day is 4,000 yuan and the gross profit is 50, then the basic cost can be covered by 80 people per day. The remaining floating costs are determined based on the number of diners per day. The lower the cost, the more profitable it is. Therefore, the buffet is not afraid of eating, nor is it afraid that people will not come to eat because it is cheap. Therefore, the 100-person buffet barbecue is very profitable. Buffet, also known as buffet, is an internationally popular informal Western-style banquet, which is especially common in large-scale business activities. The specific method is that no formal meal is prepared, and the diners can choose their own food and drinks during the meal. .