Champion Contractors completed the following transactions involving equipment. Year 1 January 1 Paid $287,600 cash plus $11,500 in sales tax and $1,500 in transportation (FOB shipping point) for a new loader. The loader is estimated to have a four-year life and a $20,600 salvage value. Loader costs are recorded in the Equipment account. January 3 Paid $4,800 to install air-conditioning in the loader to enable operations under harsher conditions. This increased the estimated salvage value of the loader by another $1,400. December 31 Recorded annual straight-line depreciation on the loader. Year 2 January 1 Paid $5,400 to overhaul the loaders engine, which increased the loaders estimated useful life by two years. February 17 Paid $820 for minor repairs to