conversations.from: human
conversations.value: To make 3 km, Ben walked for 2 hours. Continuing at the same speed, how much time in minutes would it take him to travel 12 km?
  How to solve this?
conversations.from: assistant
conversations.value: We have 12 km / 3 km = 4. So, the distance covered in 12 km is 4 times greater than 3 km. The time taken will also be 4 times greater.
  So, 2 hours x 4 = 8 hours.
  We convert the time to minutes: 8 hours * 60 minutes/hour = 480 minutes.