Task: Question Answering
Input (English): Problem: a person lent a certain sum of money at 5 % per annum at simple interest and in 8 years the interest amounted to $ 480 less than the sum lent . what was the sum lent ? 
Options: a ) 700 , b ) 800 , c ) 900 , d ) 1000 , e ) 1100
Output (English): b