Task: Question Answering
Input (English): Problem: a contractor isengaged for 30 days on the condition that he receives rs . 25 for eachday he works & fined rs . 7.50 for each day is absent . he gets rs . 425 in all . for how many days was heabsent ? 
Options: a ) 8 , b ) 10 , c ) 15 , d ) 17 , e ) 21
Output (English): b