We can solve for the cost per equivalent unit for materials by using the formula:
 Cost per equivalent unit = (Beg. work in Process Costs + Costs added this period) / (Units completed this period + Units in Ending Work in Process)
 From the given problem, we are given the values for the materials:
 Beg. work in Process Costs = $7,000
 Costs added this period = $36,000
 Units completed this period = 10,000 units
 Units in Ending Work in Process = 4,000 units
  
 Therefore:
 Cost per equivalent unit = (7000 + 36000) / (14000)
 Cost per equivalent unit = $3.07
  
 Therefore the cost per equivalent unit is about $3 under FIFO method.