Task: Question Answering
Input (English): Problem: one fast typist type some matter in 4 hrs and another slow typist type the same matter in 6 hrs. if both do combine in how much time they will take to finish.
Options: a. 10 hr, b. 1 hr, c. 2 hr 24 mins, d. 3 hr 4 mins, e. 4 hr 10 mins
Output (English): c