Montreal Manufacturing Inc. has the following cost and production data for the month of April. Beginning WIP | | 16,900 | units | Started in production | | 103,300 | | Completed production | | 90,500 | | Ending WIP | | 29,700 | | The beginning inventory was 60% complete for conversion costs. The ending inventory was 40% complete for conversion costs. Materials are added at the beginning of the process. Costs pertaining to the month of April are as follows: Beginning inventory costs are: | | | | Materials | | $64,500 | | Direct labour | | 19,600 | | Factory overhead | | 13,100 | | Costs incurred during April include: | | | | Materials | | $578,480 | | Direct labour | | 198,300 | | Factory overhead | | 387,424 | | | | | |