Task: Question Answering
Input (English): Problem: the difference of 2 digit number & the number obtained by interchanging the digits is 36 . what is the difference the sum and the number if the ratio between the digits of the number is 1 : 2 ? 
Options: a ) 7 , b ) 8 , c ) 9 , d ) 10 , e ) 12
Output (English): b