ivy cosmetics company consists of two departments, blending and filling. the filling department received 66,200 ounces from the blending department. during the period, the filling department completed 74,000 ounces, including 12,400 ounces of work in process at the beginning of the period. the ending work in process inventory was 4,600 ounces. how many ounces were started and completed by the filling department during the period? fill in the blank 1 ounces