In each case below, fill in the missing amount. 7,000 tons tons 1. Work in process, September 1 Units started during September Units completed during September Work in process, September 30 21,000 tons 4,000 tons Work in process, February 1 Units started during February Units completed during February Work in process, February 28 11,800 kilograms 1,700 kilograms 7,300 kilograms kilograms 3. Work in process, January 1 Units started during the year Units completed during the year Work in process, December 31 115,000 gallons 825,000 gallons gallons 190,000 gallons