Answer:
$716 and $12,300
Explanation:
Original Cost = $16,000 + $2,100 
Original Cost = $18,100
Double decline rate = 100/5*2
Double decline rate = 40%
First Year Depreciation = $18,100*40% 
First Year Depreciation = $7,240
Second Year Depreciation = $18,100*60%*40%
Second Year Depreciation = $18,100*0.60*0.40
Second Year Depreciation =  $4,344
Third Year Depreciation = ($18,100 - $7,240 -  $4,344 -$5,800)
Third Year Depreciation =  $716
Accumulated Depreciation = $7,240 +  $4,344 + $716
Accumulated Depreciation = $12,300