The following costs were incurred in a factory in a period. The factory distributes its production costs based on the number of units and its indirect costs, based on the occupied area.

Rental of premises $ 80,000

Utilities $ 25,000

Materials $ 12,500

There are two cost centers A & B, in the office set up which together occupy 20,000 square meters of floor space. (A has a floor space of 8,000 sq m, while B has a floor space of 12,000 sq m). What is the total indirect cost apportioned to the cost center B in the period?