Task: Question Answering
Input (English): Problem: the ages of patrick and michael are in the ratio of 3 : 5 and that of michael and monica are in the ratio of 3 : 5 . if the sum of their ages is 245 , what is the difference between the ages of patrick and monica ? 
Options: a ) 27 , b ) 48 , c ) 80 , d ) 72 , e ) 18
Output (English): c