Use the following information for Questions 13 through 20: Kimbeth Manufacturing uses a process costing system to manufacture Dust Density Sensors for the mining industry. The following information pertains to operations for the month of May 2004: 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 percent complete for materials and 20 percent complete for conversion costs. The ending inventory was 90 percent complete for materials and 40 percent complete for conversion costs. Costs pertaining to the month of May are as follows: $54,560 20,320 15,240 Beginning inventory costs Materials... Direct labor.... Factory overhead. Costs incurred during May Materials used. Direct labor..... Factory overhead. $468,000 182,880 391,160 17. Using the FIFO method, the total cost of the units in the ending work-in-process inventory at May 31, 2004, is: a. $153, 168. b. $154,800. c. $155,328. d. $156,960 e. $159,648. 18. Using the weighted average method, the equivalent unit cost of materials for May is: a. $4.12. b. $4.50. c. $4.60. d. $5.03. e. $5.46. 19. Using the weighted average method, the equivalent unit conversion cost for May is: a. $5.65. b. $5.83. c. $6.00. d. $6.41. e. $6.62. 20. Using the weighted average method, the total cost of the units in the ending work-in-process inventory at May 31, 2004, is: a. $86,400. b. $153,960. c. $154,800. d. $155,328. e. $156,960. 21. Smile Labs develops 35mm film using a four-step process that moves progressively through four departments. The company specializes in overnight service and has the largest drugstore chain as its primary customer. Currently, direct labor, direct materials, and overhead are accu mulated by department. The cost accumulation system that best describes the system Smile Labs is using is: a. operation costing. b. activity-based costing. c. job-order costing. d. process costing. e. hybrid costing