The estimated departmental overhead for producing departments S and T and the estimated costs of service departments

Question:

The estimated departmental overhead for producing departments S and T and the estimated costs of service departments E, F, and G (before any service department distributions) are:

The interdependence of the departments is as follows:

Required:
(1) Compute the final amount of estimated factory overhead of each service department after reciprocal transfer costs have been calculated algebraically.
(2) Compute the total factory overhead of each producing department and the amount of Department G cost assigned to the Marketing Department and to General Office.