Exercise 9-9 Presented below are selected transactions at Concord Corporation for 2019 Jan. Retired a piece of machinery that was purchased on January 1, 2009. The machine cost $64,600 on that date. It had a useful life of 10 years with no salvage June 30 Sold a computer that was purchased on January 1, 2016. The computer cost $34,200. It had a useful life of 5 years with no salvage value. The computer was Dec. 31 Discarded a delivery truck that was purchased on January 1, 2015. The truck cost $41,880. It was depreciated based on a 6-year useful life with a $3,000 value. sold for $14,400 salvage value