[related to solved problem #1] mcdonald's typically serves breakfast until only 10: 30 a. m. on weekdays and 11: 00 a. m. on weekends. in 2015, the company began to experiment with serving breakfast all day at various locations in san diego. several owners of mcdonald's restaurants, however, point out that offering breakfast 24 hours a day presents two logistical problems: (1) burgers and other meats need to be cooked at a higher temperature than eggs, so it would be difficult for employees to set the grill at the right temperature for both foods; and (2) scrambled eggs require employees to continually stir, while hamburgers don't require this attention. in addition, some customers might buy the cheaper breakfast than the more expensive lunch or dinner meals. source: associated press, "mcdonald's gives all-day breakfast a test try," usatoday. com, march 30, 2015; and susan befield and leslie patton. "what so hard about a 24/7 mcmuffin? " bloomberg busines week, may 12, 2013. from an economics perspective, to determine whether to serve breakfast all day, mcdonald's should