Task: Question Answering
Input (English): Problem: p can do a work in the same time in which q and r together can do it. if p and q work together, the work can be completed in 10 days. r alone needs 35 days to complete the same work. then q alone can do it in
Options: a. 20, b. 22, c. 25, d. 28, e. 30
Output (English): d