Standard-costing method, assigning costs. Refer to the information in Exercise 17-24. Suppose Bio Dec determines standard costs of $6.60 per equivalent unit for direct materials and $10.40 per equivalent unit for conversion costs for both beginning work in process and work done in the current period.

1. Do Exercise 17-24 using the standard-costing method. Note that you first need to calculate the equivalent units of work done in the current period (for direct materials and conversion costs) to complete beginning work in process, to start and complete new units, and to produce ending work in process

2. Compute the total direct materials and conversion costs variances for July 2008.