Using the same information as in Question 9, assume that the beginning Work in Process inventory for the Mixing Department had $12,000 in conversion costs, and that $30,000 in conversion costs were added during the month. What is the cost per equivalent unit for conversion costs? $3.50 $4.20 $5.00 $7.00 Using the same information as in Question 9, assume that the beginning Work in Process inventory for the Mixing Department had $12,000 in conversion costs, and that $30,000 in conversion costs were added during the month. What is the cost per equivalent unit for conversion costs? $3.50 $4.20 $5.00 $7.00