Use the following information to compute the cost of direct materials used for the current year. assume the raw materials inventory account is used only for direct materials. (assume no indirect materials.) january 1 december 31 inventories raw materials inventory $ 6,600 $ 11,600 work in process inventory 12,800 10,200 finished goods inventory 11,400 6,500 activity during current year materials purchased $ 130,500 direct labor 99,200 factory overhead 42,600