Presented below are selected transactions at Ridge Company for 2015. Jan. 1 Retired a piece of machinery that was purchased on January 1, 2005. The machine cost exist62,000 on that date. It had a useful life of 10 years with no salvage value. January 30 Sold a computer that was purchased on 1 2012. The computer cost June exist45,000. It had a useful life of 5 years with no salvage value. The computer was sold for exist14,000. Dec. 31 Discarded a delivery truck that was purchased on January 1, 2011. The truck cost depreciated based on a 6-year useful life with a exist3,000 salvage value. Journalize all entries required on the above dates, including entries to update depreciation, where applicable, on assets disposed of. Ridge Company uses straight-line depreciation. (Assume depreciation is up to date as of December 31, 2014.)