changed its estimates to a total useful life of 5 years with a salvage value of $81000. What is 2021 depreciation expense?

 $162,000

Explanation:

The depreciation expense for the first 3 years up till 2021 is;

= (Cost - Salvage value)/Useful life

= ( 579,000 - 57,000) / 9

= $58,000

In 2021, the Net book value was;

= 579,000 - ( 58,000 * 3)

= 579,000 - 174,000

= $405,000

Useful life has been changed to 5 years. 3 years have already elapsed left with 2.

New salvage value is $81,000.

= (NBV - Salvage Value) / Useful life

= (405,000 - 81,000) / 2

= $162,000

answer; /// i believe the correct answer is (all of the above);

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