Exercise 4-15 Physical Flow of Units (LO 4-1, 4-3) In each case below, fill in the missing amount. 10,000 tons tons 21,000 tons 2,000 tons 1.Work in process, September 1 Units started during September Units completed during September Work in process, September 30 2.Work in process, February 1 Units started during February Units completed during February Work in process, February 28 11,100 kilograms 2,200 kilograms 7,100 kilograms kilograms 3. Work in process, January1 Units started during the year Units Work in process, December 31 100,000 gallons 835,000 gallons gallons 240,000 gallons completed during the year