Answer: $17,333
Explanation: The above answer can be calculated as follows :-
Depreciation till [tex]=\frac{80,000\:-20,000}{5}\:\times 2\:=\$24,000[/tex]
2015 TO 2017
now,
value of asset in 2017 = $80,000 - $24,000 + $16,000 = $72,000
therefore,
Depreciation in 2017 [tex]=\frac{72,000\:-20,000}{3}\:\times 2\:=\$17,333[/tex]