The Hilton Skating Club used straight$-$line depreciation for a used Zamboni ice$-$resurfacing machine that cost $$45,000,$ under the assumption it would have a four$-$year life and a $$5,300$ trade$-$in value. After two years, the club determined that the Zamboni still had three more years of remaining useful life, after which it would have an estimated $$3,940$ trade$-$in value. Required: $1.$ Calculate the Zamboni's book value at the end of its second year. Zamboni's book value $2.$ Calculate the amount of depreciation to be charged during each of the remaining years in the Zamboni's revised useful life. Amount of depreciation