conversations.from: human
conversations.value: Solve the math problem: A train leaves its departure station with 6 coal cars, 12 iron cars, and 2 wood cars. Between each station, there are 6 miles, and it takes 25 minutes to travel between them. At each station, the train can deposit up to 2 coal cars, 3 iron cars, and 1 wood car. How many minutes will it take to deliver all the cars?
conversations.from: assistant
conversations.value: To deliver all the coal, you need to pass by 6 coal / 2 coal/station = 3 stations
  To deliver all the iron, you need to pass by 12 iron / 3 iron/station = 4 stations
  To deliver all the wood, you need to pass by 2 wood / 1 wood/station = 2 stations
  So 4 stations are needed to deliver everything, so 4 stations * 25 minutes/station = 100 minutes are needed