Paul sells chocolate chip cookies and peanut butter cookies.
• baking a batch of chocolate chip cookies takes 1.75 cups of flour and 2 eggs.
• baking a batch of peanut butter cookies takes 1.25 cups of flour and 1 egg.
• Paul has 10 cups of flour and 12 eggs.
• he makes $4 profit per batch of chocolate chip cookies.
• he makes $2 profit per batch of peanut butter cookies.
How many batches of peanut butter cookies should Paul make to maximize his profit?