Task: Question Answering
Input (English): Question: A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. Find the average
speed for first 320 km of tour.

 Option A: 70.11 km/hr

 Option B: 71.11 km/hr

 Option C: 72.11 km/hr

 Option D: 73.11 km/hr

 Option E: None of these
Output (English): Option B