There are no units in process at the beginning of the period 1500 units in process at the end of the period that are 40% complete and 15000 units transferred out during the period. Based on this information there were 14400 equivalent units of production during the period.

The equivalent units of production would be calculated as the sum of the units transferred out plus the equivalent units for the ending work in process. Here, it would be 15,000 units transferred out + (1,500 units * 40% completion) = 15,000 + 600 = 15,600 equivalent units, not 14,400.