Jobe Concrete Products placed a new sand sifter into production 3 years ago. It had an installed cost of $100,000, a lif

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Jobe Concrete Products placed a new sand sifter into production
3 years ago. It had an installed cost of
$100,000, a life of 5 years, and an anticipated salvage of $20,000.
Book depreciation charges for the 3 years are
$40,000, $24,000, and $14,000, respectively. (a) Determine the book
value after 2 years. (b) If the sifter’s market
value today is $20,000, determine the difference between its
current book value and its market value. (c)
Determine the total percentage of the unadjusted basis written off
through year 3.