Atruck costing 25000 with a residual value of 5000. the truck's estimated life is 10 years. what is the book value at the end of year 2

$25,000 - 5,000 = $20,000
Since the useful life is 10 years or 10% per year, double-declining rate would be 20%

Year 1
$20,000 x .2 = $4000
Book Value = $16,000

Year 2
$16,000 x .2 = $3,200
Book Value = ($16,000-3,200) =$12,800