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$1$Wardell Company purchased a mainframe on January $1,2019,$ at a cost of $$49,000.$ The computer was depreciated using the straight$-$line

Imethod over an estimated five$-$year life with an estimated residual value of $$7,000.$ On January $1,2021,$ the estimate of useful life was

changed to a total of $10$ years, and the estimate of residual value was changed to $$400.$

Required:

Prepare the year$-$end iournal entry for depreciation in $2021.$ depreciation was recorded during the year.

Prepare the year$-$end journal entry for depreciation in $2021.$ Assume that the company uses the sum$-$of$-$the$-$years'$-$digits method instead

of the straight$-$line method.