Task: Question Answering
Input (English): Problem: b alone can do piece of work in 10 days . a alone can do it in 15 days . if the total wages for the work is rs 5000 , how much should b be paid if they work together for the entire duration of the work ? 
Options: a ) 267 , b ) 7 , c ) 76 , d ) 8 , e ) 82
Output (English): a