Final answer:
The number of equivalent units of production for conversion costs in June is 13,808 units using the first-in, first-out method.
Step-by-step explanation:
To calculate the number of equivalent units of production for conversion costs, we need to consider the units that were in process at the beginning of June, the units completed during June, and the units that were in process at the end of June.
Beginning Units: 2,400 units * 51% = 1,224 equivalent units
Completed Units: 12,200 units
Ending Units: 1,200 units * 32% = 384 equivalent units
Total Equivalent Units: Beginning Units + Completed Units + Ending Units = 1,224 + 12,200 + 384 = 13,808 equivalent units
Therefore, the number of equivalent units of production for conversion costs for June using the first-in, first-out method is
13,808 units