Barnett Company adds materials at the beginning of the process in department M. Conversion costs were 75% complete as to the 8,000 units in work-in-process at May 1, and 50% complete as to the 6,000 units in work-in-process at May 31. During May 12,000 units were completed and transferred to the next department. An analysis of the costs relating to work-in-process at May 1 and to production activity for May is as follows: Materials costs Conversion costs Work-in-process, 5/1 $9,600 $4,800 Costs added in May 15,600 14,400 Using the weighted average method, the total cost per equivalent unit for May was

$2.47

$2.50

$2.68

$3.16