Task: Question Answering
Input (English): Problem: working at a constant rate , p can finish a job in 4 hours . q , also working at a constant rate , can finish the same job in 20 hours . if they work together for 3 hours , how many more minutes will it take p to finish the job , working alone at his constant rate ? 
Options: a ) 12 , b ) 15 , c ) 20 , d ) 21 , e ) 24
Output (English): e