Task: Question Answering
Input (English): Problem: a works thrice as much as b . if a takes 60 days less than b to do a work then find the number of days it would take to complete the work if both work together ? 
Options: a ) 22.5 days , b ) 21.5 days , c ) 23.5 days , d ) 24.5 days , e ) 25.5 days
Output (English): a