290 Taxes R Us (TRU), an income tax preparation firm, uses the FIFO method of process costing for its monthly reports. TRU has no materials cost in the preparation of the returns. The following shows its March information: Returns in prdcess, March 1 (30% complete) Returns started in March - 2,550 Returns in process, March 31 (90% complete) 5R9 Labor and overhead costs for returns in process, March 1 $ 7,250 Labor and overhead costs incurred in March $ 390,775 Required: Calculate the following amounts for conversion costs using the FIFO method: 1 2 3 Number of equivalent units tax retums) Cost per equivalent unit Cost of completed tax returns for the month of March Cost of tax returns in process as of March 31 4