Roary Chemicals has a mixing department and a refining department. Its process-costing system in the mixing department has two direct materials cost categories (chemical P and chemical Q) and one conversion costs pool. The following data pertain to the mixing department for July 2012:

Units

Work in process, July 1                                                           0
Units started                                                                   50,000
Completed and transferred to refining department        35,000

Costs

Chemical P                                                                 $250,000
Chemical Q                                                                    70,000
Conversion costs                                                          135,000

Chemical P is introduced at the start of operations in the mixing department, and chemical Q is added when the product is three-fourths completed in the mixing department. Conversion costs are added evenly during the process. The ending work in process in the mixing department is two-thirds complete.

Required
1. Compute the equivalent units in the mixing department for July 2012 for each cost category.
2. Compute (a) the cost of goods completed and transferred to the refining department during July and (b) the cost of work in process as of July 31, 2012.