The central theme behind the theory of comparative advantage is that if one country has an advantage (lower cost) in the production of two products, they should focus on the production of both so that they gain the greatest advantage in trade when compared to other countries that may have a lesser advantage.

Aproduction department's output for the most recent month consisted of 8,000 units completed and transferred to the next stage of production and 5,000 units in ending work in process inventory. the units in ending work in process inventory were 50% complete with respect to both direct materials and conversion costs. calculate the equivalent units of production for the month, assuming the company uses the weighted average method.