Task: Question Answering
Input (English): Problem: an amount of rs . 100000 is invested in two types of shares . the first yields an interest of 9 % p . a and the second , 11 % p . a . if the total interest at the end of one year is 9 1 / 2 % , then the amount invested at 11 % was ? 
Options: a ) 23777 , b ) 25000 , c ) 29977 , d ) 26777 , e ) 19871
Output (English): b