Timberline Associates uses the weighted-average method in its process costing system. The following data are for the first processing department for a recent month: Work in process, beginning: Units in process ........................................................ 2,400 Percent complete with respect to materials .............. 75% Percent complete with respect to conversion ........... 50% Costs in the beginning inventory: Materials cost ........................................................... $8,400 Conversion cost ........................................................ $7 ,200 Units started into production during the month ........... 20,800 Units completed and transferred out ........................... 22,200 Costs added to production during the month: Materials cost ........................................................... $97,400 Conversion cost ........................................................ $129,600 Work in process, ending: Units in process ........................................................ 1,000 Percent complete with respect to materials .............. 80% Percent complete with respect to conversion ........... 60% Required: Determine the equivalent units of production. Determine the costs per equivalent unit. Determine the cost of ending work in process inventory. Determine the cost of the units transferred to the next department. and-91