i need written solution too please

Mccabe Corporation uses the weighted average method in its process costing The following data pertain to its Assembly Department for September Percent Complete Materials Conversion 10 1,200 8,600 Work in process September 1 Units started into production during September Units completed during September and transferred to the next department Work in process, September 30 7,200 2,100 25* 25 % Required: Record your answer and calculations on your worksheet. Compute the equivalent units of production for both materials and conversion costs for the Assembly Department for September using the weighted average method