The Oberon Company purchased a delivery truck for $95,000 on January 2.The truck was estimated to have a $3,000 salvage value and a 4 year life.The truck was depreciated using the straight-line method.At the beginning of the third year,it was determined the truck's total useful life would be 6 years rather than 4,and the salvage at the end of the 6th year would be $1,500.Determine the depreciation expense for the truck for the 6 years of its life.