The loss of $650 in part (1)d occurred because the carrying amount of the truck at the date of sale was $3,250 ($6,100 – $2,850), which was higher than the sale price of $2,600. This shows that depreciation is not a method of valuation but rather a process of allocating an asset’s cost over its life. In this case, the market and carrying amounts of the truck were significantly different because the original estimates of useful life and salvage value were not totally accurate.