Task: Question Answering
Input (English): Problem: a present value of a machine is $ 2000 . its value depletiation rate is 20 % per annum then find the machine value before 2 years ? 
Options: a ) $ 3125 , b ) $ 2945 , c ) $ 3012 , d ) $ 2545 , e ) $ 3150
Output (English): a