Problem: DD needs to decide how many muffins and how many croissants to produce each day. The profit per muffin is $1 and the profit per croissant is $3.5. On an average, each muffin takes 5 minutes of labor time and 5 minutes of oven time (of course they are produced in batches. For simplification I have given you the time per piece). Croissants take 12 minutes of labor time and 1 minute of oven time. DD can have its labor dedicated for a maximum of 2 hours every day. The oven time is limited to 6 hours during the night. Due to customer requests DD produces at least 5 croissants every day.