Your company has two service departments and two production departments. Last year SD1 provided 60,000 hrs of service to SD2, 20,000 hrs service to PD1 and 40,000 hrs service to PD2. SD2 provided 30,000 hrs service to SD1, 10,000 hrs to PD1 and 40,000 hrs to PD2. Costs prior to allocation were $200,000 in SD1 and $200,000 in SD2. Allocate the SD costs based on the step down method, starting with department SD1.