The debits to Work in Process - Assembly Department for April, together with data concerning production, are as follows: April 1, work in process: Materials cost, 3,000 units $7,150 Conversion costs, 3,000 units, 2/3 completed $5,740 Materials added during April, 10,000 units $26,744 Conversion costs during April $31,655 Goods finished during April, 11,500 units - - - April 30 work in process, 1,500 units, 1/2 completed - - - All direct materials are placed in process at the beginning of the process and the average cost method is used to cost inventories. What is the cost of the work in process inventory on April 30?