EXERCISE 4-15 (10 MINUTES) In each case below, fill in the missing amount. 1 Work in Process, September 1 Unts started during September Unts completed during September Work in process, September 30 Exercise 4-15 Physical Flow of Units (L04-1,4-3) 9,000 tons ? 19,000 tons 2.000 tons 2 Work in process, February 1 Units started during February Units completed during February Work in process, February 28 3. Work in process, January 1 Units started during the year Units completed during the year Work in process, December 31 13,000 kilograms 1,500 kilograms 9.200 klograms ? 100,000 gallons 850,000 gallons 200,000 gallons