A company allocates its variable factory overhead based on direct labor hours. During the past three months, the actual direct labor hours and the total factory overhead allocated were as follows: Jan. Feb. Mar. Direct labor hours 1,500 4,500 7,500 Total overhead Allocated $85,000 $160,000 $300,000 Based upon this information, monthly fixed factory overhead was: (Round your "Unit variable cost" to 2 decimal places.)