Task: Question Answering
Input (English): Problem: in a vehicle ' s repair shed, 3 men and 8 boys can do a piece of work in 15 days; 4 men and 9 boys can do the same work in 12 days. then, 5 men and 5 boys can do double the amount of this work in :
Options: a. 20 days, b. 33 days, c. 24 days, d. 28 days, e. none of these
Output (English): c