Refer to the information for Rhino Car Wax in the previous problem. Rather than using actual costs, assume that Rhino uses standard process costing to value its inventories. Rhino values each equivalent unit of materials at $10 and each equivalent unit of conversion costs at $25.

Required:
a. Prepare Rhino’s process-costing report for April. What is the cost of cases of car wax finished during April and the cost of the cases still in process on April 30?
b. Compute Rhino’s materials variance and conversion cost variance for April.