Revision of depreciation

Equipment with a cost of $$383,000$ has an estimated residual value of $$41,000,$ has an estimated useful life of $15$ years, and is depreciated by the straight$-$line method.

a$.$ Determine the amount of the annual depreciation.

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b$.$ Determine the book value after $11$ full years of use.

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c$.$ Assuming that at the start of the year $12$ the remaining life is estimated to be $7$ years and the residual value is estimated to be $$36,300,$ determine the depreciation expense for each of the remaining $7$ years.

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