A machine that produces cellphone components is purchased on January $1,2024,$ for $$112,000.$ It is expected to have a

useful life of four years and a residual value of $$10,000.$ The machine is expected to produce a total of $200,000$

components during its life, distributed as follows: $40,000$ in $2024,50,000$ in $2025,60,000$ in $2026,$ and $50,000$ in $2027.$

The company has a December $31$ year end.

$($a$)$

Calculate the amount of depreciation to be charged each year, using each of the following methods:

i$.$ Straight$-$line method

Straight$-$line method depreciation $

per year

ii$.$ Units$-$of$-$production method $($Round depreciation per unit to $3$ decimal places, e$.$g$.15\mathrm{.}257$ and

depreciation expense to $0$ decimal places, e$.$g$.125.)$

Units$-$of$-$production method depreciation $

per unit

Year Depreciation Expense

$2024$$

$2025$$

$2026$$

$2027$$

iii. Double$-$diminishing$-$balance method

Rate