the step down method please

https:/mail.yalou :59 arch Done Expert Q&A Problem3 Jerry Co. allocates the service department ovethead cos to thosco pe Overhead costs incurred Service provided to: Mainteaanse Uiliti $18,700 $9000 Maintenance Dept. Utilities Dept. Producing Dept. A Producing Dept. B 10% OD 360) . 40% 8 40% ??? Allocate Maintenance & Utilities costs to the Producing Departments igt hods . Step down allocating Uilies first