Task: Question Answering
Input (English): Problem: the length of a rectangular plot is 20 metres more than its breadth . if the cost of fencing the plot @ rs . 26.50 per metre is rs . 8480 , what is the length of the plot in metres ? 
Options: a ) 20 , b ) 200 , c ) 300 , d ) 90 , e ) 140
Output (English): d