Box scanning Three vans arrived at your warehouse, each containing boxes that need to be scanned within the next 4 hours. Each worker can scan an average of 225 boxes per hour. Van number Total capacity % Full Average Box Size Van 1 6,000 cubic ft 40% 0.3 cubic ft Van 2 8,000 cubic ft 80% 0.5 cubic ft Van 3 5,000 cubic ft 50% 0.4 cubic ft 4 15 31 106 121