Minty Inc. has one production process and produces only one product. During the month of June, the company started 25,600 units. The company began June with 14,400 units in work in process, which were 35% complete with respect to conversion costs. At the end of June, the company had 12,300 units in ending work in process, which were 40% complete with respect to conversion costs. What was the number of equivalent whole units for conversion costs in June, assuming the company uses the weighted average method of process costing?