In each case below, fill in the missing amount. 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 3. Work in process, January 1 Units started during the year Units completed during the year Work in process, December 31 7,000 tons tons 22,000 tons 3,000 tons 12,100 kilograms 1,000 kilograms 9,400 kilograms kilograms 100,000 gallons 835,000 gallons gallons 195,000 gallons