Based on the information provided in the table below, calculate the amount of $300,000 polishing department overhead allocated to each unit--or cost per equivalent unit-using weighted average process cost accounting. Units completed 4,000 4,000 4,000 WIP-end (50% complete) 1,000 800 500 WIP-beg (50% complete) IN UNITS) Units Started Machining 2,000 Polishing Storage 3,000 2,800 2,700 2,000 1,800