axes 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 process, March 1 (30% complete) 240 Returns started in March 2,300 Returns in process, March 31 (90% complete) 480 Labor and overhead costs for returns in process, March 1 $ 6,000 Labor and overhead costs incurred in March $ 290,400 Required: Calculate the following amounts for conversion costs using the FIFO method: 1.Number of equivalent units(tax returns) 2. Cost per equivalent units cost of completed tax returns for the month of March Cost of tax returns in process as of March 31