Answer:
Let's go through these calculations step by step:
1. Book Value at the end of the second year
The initial cost of the Zamboni was $45,500 and it was expected to have a trade-in value of $5,400 after 4 years. This gives us a total depreciation amount of $45,500 - $5,400 = $40,100 over the course of 4 years.
With straight-line depreciation, the Zamboni depreciates by an equal amount each year. So, its annual depreciation would be $40,100 / 4 = $10,025 per year.
After two years, the Zamboni would have depreciated by 2 * $10,025 = $20,050.
So, the book value at the end of the second year would be the initial cost minus the amount depreciated so far: $45,500 - $20,050 = $25,450.
2. Depreciation for each of the remaining years
Now, the club has determined that the Zamboni has three more years of useful life, and it will have a trade-in value of $3,970 at the end of that period. So, the total depreciation over the next three years would be the current book value minus the future trade-in value: $25,450 - $3,970 = $21,480.
The annual depreciation for each of the next three years, using straight-line depreciation, would be $21,480 / 3 = $7,160.
So, the Zamboni would depreciate by $7,160 each year for the next three years under the new assumptions.