A candy shop wants to make chocolates with nuts in them. Some chocolates will be more "nutty" than others: a Nut Lovers bar will have 2 parts chocolate to 1 part nuts, while a regular nut bar will be 3 parts chocolate to 1 part nuts. The kitchen currently has a total of 25 units of nuts and 60 units of chocolate. The profit from a Nut Lovers bars is $6 and the profit from the regular bars is $5. How many of each bar should the company make in order to maximize their profit?