conversations.from: human
conversations.value: Can you explain how to solve this math problem: The sum of the three numbers is 500. If the first number is 200, and the value of the second number is twice the value of the third number, find the value of the third number.
conversations.from: assistant
conversations.value: Let's say the third number is x.
  The sum of the second and third number is 500-200 = 300
  Since the third number is x, the sum of the values of the second and third number is x+2x = 300
  This is 3x=300
  The value of the third number is x=300/3
  x=100