A present value of a machine is $800. Its value depletion rate is 10% per annum then find the machine value after 2 years?	Choose the most appropriate option
A) $900  B) $810  C) $915  D) $715  E) $648
P= $800   R = 10%   T = 2 years   Machine value after 2 years = P[(1-R/100)^T]   =800*9/10 * 9/10= 
<gadget id="calculator">800*9/10 * 9/10</gadget>
<output>648</output>
$648   Answer is $648
<result>E</result>
A present value of a machine is $800. Its value depletion rate is 10% per annum then find the machine value after 2 years?