Task: Question Answering
Input (English): Problem: two numbers are in the ratio of 7 : 6 . if 18 be subtracted from each , they are in the ratio of 6 : 5 . find the numbers ? 
Options: a ) 5,9 , b ) 7,9 , c ) 4,7 , d ) 7,6 , e ) 6,9
Output (English): d