Answer:
$4,900 per year
Explanation:
I'm pretty sure you just do this:
It was worth $27,000 when they bought it.
After 5 years they'll be able to sell it for 2,500
So it will have lost a lot of its value. In fact, this much:
27,000 - 2,500 = $24,500
That's what the machine will have "cost" them over five years.
So to depreciate it using "the straight-line method," just divide that dollar amount by 5 years to find out how many dollars per year they get to write off as depreciation:
$24,500/5 yr = $4,900 per year