On January$1,20202020,$ AmerExAmerEx Transportation Company purchased a used aircraft at a cost of $ $48$ comma $500$ comma $000$$$48,500,000.$ AmerExAmerEx expects the plane to remain useful for fivefive years $(7$ comma $000$ comma $0007,000,000$miles$)$ and to have a residual value of $ $4$ comma $500$ comma $000$$$4,500,000.$ AmerExAmerEx expects to fly the plane $775$ comma $000775,000$ miles the first$$ year, $1$ comma $250$ comma $0001,250,000$ miles each year during the$$ second, third, and fourth$$ years, and $2$ comma $475$ comma $0002,475,000$ miles the last year.

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Part $1$

$1.$ Compute AmerExAmerEx$\text{'}$s depreciation for the first two years on the plane using the$$ straight$-$line method, the$$ units$-$of$-$production method, and the$$ double$-$declining balance method.

a$.$ Straight$-$line method

Using the straight$-$line method, depreciation is

$$8,800,000$

for $2020$ and

$$8,800,000$

for $2021.$

Part $2$

b$.$ Units$-$of$-$production method $($Round the depreciation per unit of output to two decimal places to compute your final$$ answers.$)$

Using the units$-$of$-$production method, depreciation is

$$4,874,750$

for $2020$ and

$$7,862,500$

for $2021.$

Part $3$

c$.$ Double$-$declining balance method

Using the double$-$declining$-$balance method, depreciation is

for $2020$ and

for $2021.$