A school supply store is planning to have a sale. They have 600 notebooks, 500 folders, and 400 pens. They plan to create 2 different packages to sell the items. In package A, there will be 2 notebooks, 1 folder, and 2 pens. In package B, there will be 3 notebooks, 1 folder, and 1 pen. They would also like to make at least 75 package A bundles. The price of package A is $6.50 and the price of package B is $7.00. 

Required:

How many of each package should they put together to obtain the maximum revenue? 

What is the maximum revenue?