28. The Merchant Manufacturing Company has two service departments — purchasing and
maintenance, and two production departments — fabrication and assembly. The distribution of
each service department’s efforts to the other departments is shown below:
FROM TO
Purchasing Maintenance Fabrication Assembly
Purchasing 0% 60% 10% 30%
Maintenance 20% 0% 30% 50%
The direct operating costs of the departments (including both variable and fixed costs) were as
follows:
Purchasing $96,000
Maintenance 18,000
Fabrication 72,000
Assembly 48,000
The total cost accumulated in the fabrication department using the step method is (assume the
purchasing department goes first; calculate all ratios and percentages to 4 decimal places, for
example 33.3333%, and round all dollar amounts to the nearest whole dollar):