Solve the following situation and then answer the question

Il. Solve the following situations and then answer the question. The manager of a factory must decide if they produce their own packages, which until now have been purchased from external suppliers at $ 1.10 each. The manufacture of the packages would increase the company's general costs by $ 800 per month and the cost of material and labor will be 60 cents per package. How many packages should the company use each month to justify the decision to manufacture its own packaging