The market value of a certain machine decreased by 10 percent of its purchase price each year. If the machine was purchased in 1982 for its market value of $8,000, what was its market value two years later?
Choose the correct answer
A) $8,000
B) $5,600
C) $3,200
D) $6,400
E) $800
$6,400   Market value in 1982= $ 8000   Market value in 1983 = $ 8000- ($ 8000 x 10/100) = 8000-800= 
<gadget id="calculator">8000-800</gadget>
<output>7_200</output>
$ 7200   Market value in 1984= Market value in 1983 - (10 % of $8000)= 7200-800= 
<gadget id="calculator">7200-800</gadget>
<output>6_400</output>
$6400
<result>D</result>
The market value of a certain machine decreased by 10 percent of its purchase price each year. If the machine was purchased in 1982 for its market value of $8,000, what was its market value two years later?