Task: Question Answering
Input (English): Problem: p and q can complete a work in 40 days and 24 days respectively. p alone started the work and q joined him after 8 days till the completion of the work. how long did the work last ?
Options: a. 5 days, b. 10 days, c. 14 days, d. 20 days, e. 26 days
Output (English): d