Alexander Company purchased a piece of equipment for $14,000 and depreciated it for three years over a five-year estimated life with an expected residual value at the end of five years of $2,000. At the end of the third year, Alex decided to upgrade to equipment with increased capacity and sold the original piece of equipment for $7,500. Calculate the gain or loss on the disposal at the end of the third year Answer: _________on sale by ________