Frost, Inc. is a service firm that uses process costing. The firm worked on a total of 1,600 cases this month, 800 of which were completed during the period. The remaining cases were 40% complete. The firm incurred $180,000 in direct labor and manufacturing overhead costs during the period, and had $4,800 in direct labor and manufacturing costs in beginning inventory. Using the weighted average method, what was the cost per equivalent unit?