The Hitton Skating Club used straight-line depreciation for a used Zamboni ice-resurfacing machine that cost $51,000, under the issumption it would have a four-year life and a $6,500 trade-in value. After fwo years, the club determined that the Zamboni still had hiree more years of remaining usefut life, after which it would have an estimated $4,300 trade-in value. Required: 1. Calculate the Zamboni's book value at the end of its second yeac. 2. Calculate the amount of depreciotion to be charged duning each of the remaining years in the Zambon's revised useful life