Last month Big Time Productions manufactured 25000 units and sold 23000 of these units at a price of $10.00 per unit. Manufacturing costs consisited of direct labor,$30000,direct materials $32000,varible manufaacturing overhead,$3500,fixed manufactring overhead $21500.Selling and administrative costs are all fixed and totaled $24000.Beginning inventory consists of no units. What is big time production's income before taxes using variable costing?