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The Nitrogen Fixation Department of Pronghorn Company began the month of December with work in process inventory of $4,160$ units that are $100\%$ complete as to materials and $30\%$ complete as to conversion costs. Units completed and transferred out are $12,480$ units. Ending work in process inventory contains $10,400$ units that are $100\%$ complete as to materials and $40\%$ complete as to conversion costs.

Compute the equivalent units of production for March for materials and conversion costs for the month of December using the weighted$-$average method of process costing.

Quantities

Units to be accounted for

Work in process inventory, $\frac{12}{1}$

Started into production

Total units to be accounted for

Units accounted for

Completed and transferred out

Work in process inventory, $\frac{12}{31}$

Total units accounted for