Mariah is required to load loaves of bread on trays to prepare for shipping. Her goal for 8 hours of work is to load 500 trays of bread. Each tray can hold 12 loaves of bread. If Mariah has loaded 300 trays of bread in her first 4 hours, how many more loaves of bread will she need to load on trays per hour to reach her goal in time?*
