Unit Costs in a Bank. BancTwo of Columbus, Ohio, processes nonroutine checks in its Check Clearing Department. No materials costs are incurred in this depart- ment. On June 1, 4,000 checks in process were 25 percent complete with an associated processing cost of $200. During June, 100,000 checks were started in process. By the end of June, 70,000 checks had been started and completed. The direct processing costs in June amounted to $22,000. On June 30, the checks in process were one-third complete.

Required: 

Calculate equivalent units and the unit cost of work done during June.