conversations.from: human
conversations.value: This math problem has got me stumped: Greg drives 30 miles from his workplace to the farmer's market. After buying his groceries at the farmers market, he drives home. To get home, he travels for 30 minutes at 20 miles per hour. How many miles in total does Greg travel?
  Can you show me the way?
conversations.from: assistant
conversations.value: We must first convert minutes to hours, so 30 minutes * (1 hour/60 minutes) = 0.5 hours
  The number of miles Greg travels on his trip home is 0.5 hours * 20 mph = 10 miles
  The total miles Greg travels is 10 + 30 = 40 miles