Happy Trails, Inc. manufactures railway coaches and uses the FIFO method of process costing to record costs. The WorkminusinminusProcess Inventory of the Heating Department on October 1 was 73% complete for materials and 23% complete for conversion costs. On October 31, its ending WorkminusinminusProcess Inventory was 80% complete for materials and 43% complete for conversion costs. This means that for the ending inventory, % of the materials and % of the conversion costs were added during October.