Kimbeth Manufacturing uses a process cost system to manufacture Dust Density Sensors for the mining industry. The following information pertains to operations for the month of May. UNITS Beginning work-in-process inventory, May 1 16,000 Started in production during May 100,000 Completed production during May 92,000 Ending work-in-process inventory, May 31 24,000 The beginning inventory was 60% complete for materials and 20% complete for conversion costs. The ending inventory was 90% complete for materials and 40% complete for conversion costs. Costs pertaining to the month of May are as follows: * Beginning inventory costs are materials $54,560, direct labor $20,320, and factory overhead $15,240 * Costs incurred during May are materials used $468,000, direct labor $182,880, and factory overhead $391,160. Using the FIFO method, the equivalent units of production for conversion costs are 88,800 units 95,200 units 98,400 units 85,600 units