conversations.from: human
conversations.value: Find the answer to this math problem: Ben bought a car for $20000 in 2007. The price of the car depreciates at a constant rate of 21% per year. Find the price of the car in the year 2010.
conversations.from: assistant
conversations.value: The price of the car depreciates of 20000 * 21% = $4200 per year.
  Ben had the car for 2010 - 2007 = 3 years.
  The price of the car depreciates 4200 * 3 = $12600 from 2007 to 2010.
  So the price of the car in the year 2010 is $20000 - $12600 = $7400.