Sarhad Limited produces a single product that passes through three departments, A, B and C. The company uses FIFO method for process costing. A review of department A's cost records for the month of January 20X4 shows the following details: Units Material Labour Rs. Rs. 64,000 28,000 Work in process inventory as at January 1, 20X4 16,000 (75% complete as to conversion costs) Additional units started in January 20X4 Material costs incurred 110,000 - - 430,500 Labour costs incurred Work in process inventory as at January 31, 20X4 18,000 (50% complete as to conversion costs) Units completed and transferred in January 20X4 100,000 - 230,000 Overhead is applied at the rate of 120% of direct labour. Normal spoilage is 8,000 units. The spoiled units are sold in the market at Rs. 6 per unit. Required Compute the following for the month of January: (a) Equivalent production units. (b) Costs per unit for material, labour and factory overhead. (6 marks) (3 marks) (c) Cost of closing work in process and the units transferred to the next process.