Susan Sai Ltd provides the following information about departmental consumption of allocation bases for its 3 support and 2 operating departments. Resource provided to: Resource provided to: Support departments Operating departments Resources Personnel Cafeteria Maintenance Machining Assembly provided by: Personnel 10% 20% Cafeteria 5% 30% 40% 25% 40% 30% 50% 20% Maintenance 10% 20% For the step-down method, what proportion of the cafeteria's costs will be allocated to the maintenance department if the allocation order is personnel, cafeteria and maintenance? Answer: 20/(20+40+30)=0.222 or 22.2%