The following information is available for Department X for the month of August Work in process, August 1: Materials $ 8,480 Conversion costs S15.900 Costs added during August Materials $29,680 Conversion costs $26,500 Equivalent units of production (weighted average): Materials 4,240 Conversion 5,300 Department X's cost per equivalent unit for materials using the weighted average method would be: $2.00 $8.00 O $7.00 $9.00