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The two main surgical units and their actual activity usoge follow. Required: Compute activity rates using activity:based costing. Aflocate overhead cost to the general surgery and to the orthopedic surgery units. Compute overhead cost per patient for each urgery unit. 1. Compute activity rates using acthity based costing 2. Allocote overheod cost to the general surgery and to the orthopedic surgery units. Compute overhead cost per patient for each surgery unit