A Trackco was acquired on July 1, 2015, at a cost of $189,000. The Trackco had a six-year useful life and an estimated salvage value of $21,000. The straight-line method of depreciation was used. On January 1, 2018, the Trackco was overhauled at a cost of $17,500, which extended the useful life of the truck for an additional two years beyond that originally estimated (salvage value is still estimated at $21,000). In computing depreciation for annual adjustment purposes, expense is calculated for each month the asset is owned. #4 Instructions Prepare the appropriate entries for January 1, 2018 and December 31, 2018. (20pts)