Twenty percent. According to the query of the joining stars, the price of a light food is between 18-30 yuan, and the cost of ingredients is between 5- 10 yuan. Plus labor costs, a single light food store can earn 20% profit from it, and the main way to improve profits is to save redundant costs. Profit is the business achievement of entrepreneurs, the comprehensive reflection of the business effect of enterprises and the concrete embodiment of their final results.