Task: Question Answering
Input (English): Problem: a contractor undertakes to built a walls in 50 days. he employs 40 peoples for the same. however after 25 days he finds that only 40 % of the work is complete. how many more man need to be employed to complete the work in time ?
Options: a. 60, b. 30, c. 35, d. 20, e. none of these
Output (English): a