Kino produces blended cement, among other products, used in dams and ports. To produce the cement, the company starts with rocks from its quarry in Colorado and puts the rocks through a crushing process. Suppose that on May 1, Kino has 24 tons of rock (75% complete) in the crushing process. The cost of that beginning WIP inventory was $6,000. During May, the company added 288 tons of rock from its quarry, and at the end of the month, 15 tons remained in process, on average one-third complete. The cost of rocks from the quarry for the last five (5) months has been $120 per ton. Labor and overhead costs during May in the rock-crushing process were $40,670. Kino uses the weighted-average process costing method.

Required: (a) Compute the cost per ton of crushed rock for production in May. (5 marks) (b) Compute the cost of the WIP inventory at the end of May. (5 marks)