Task: Question Answering
Input (English): Problem: at what rate percent on simple interest will rs . 1800 amount to rs . 2000 in 5 years ? 
Options: a ) 4 % , b ) 3 6 / 7 % , c ) 2 6 / 7 % , d ) 3.47 % , e ) 6 %
Output (English): d