Depreciation method: straight line

purchase date: 1/1/10

cost: $225,000.00

estimated life: 20

sales price: $25,000.00

date sold: 12/31/15

a)	What is the depreciation expense for yr 20 using the straight-line method?
b)	What is the net book value of the equipment at the end of year 15?
c)	Calculate gain/loss on sale of equipment.
d)	What is the account balance in accumulated depreciation at the end of yr 20?
e)	What is the depreciation expense for yr 1 using the double declining method?
f)	Assuming the equipment was purchased on June 1, 2010 and sold on 12/31/2015, what is the gain or loss on sale ?