a truck was acquired on July 1,2008, at cost of $216,000. The truck had a six-year useful life and an estimated salvage value of $24,000. The straight-line method of depreciation was used. On January 1, 2011, the truck was overhauled at a cost of $20,000, which extened the useful life of the truck for an additiona two years beyond that orinally estimated (slavage vaule is still estimated at $24,000). In computing depreciation for annual adjustment purposes, expense is calculated for each month the assest is owned. Prepare the appropiate entries for January 1, 2011 and December 31, 2011