What is the profit of clothes in warehouse 7?

Since its establishment, No.7 Clothing Company has won a good reputation in the industry and the trust of consumers with its novel and in-place planning, professional standard implementation and meticulous service. At present, it has made remarkable achievements and become a leader in the clothing industry. A dress with a price of 300-400 yuan costs 300-400 yuan, and a dress with a price of 700-800 yuan costs 100 yuan.