Lauter Tun Corporation acquired equipment on January? 1, 2012, for? $300,000. The equipment had an estimated useful life of 10 years and an estimated salvage value of? $25,000. On January? 1, 2015, Lauter Tun Corporation revised the total useful life of the equipment to 8 years and the estimated salvage value to be? $10,000. Compute depreciation expense for the year ending December? 31, 2015, if Lauter Tun Corporation usesstraight-line depreciation.