Task: Question Answering
Input (English): Problem: a can finish a work in 12 days and b can do same work in half the time taken by a. then working together, what part of same work they can finish in a day ?
Options: a. 1 / 4, b. 1 / 6, c. 1 / 7, d. 1 / 8, e. none of these
Output (English): a