conversations.from: human
conversations.value: Break down this math problem: The age of Gladys is equal to twice the sum of the ages of Billy and Lucas. Billy is 3 times younger than Gladys who is 30 years old now. How old will Lucas be three years from now?
conversations.from: assistant
conversations.value: Billy's age is 30/3 = 10 years old.
  The sum of the ages of Billy and Lucas is 30/2 = 15.
  So, Lucas is 15 - 10 = 5 years old now.
  Therefore, Lucas will be 5 + 3 = 8 years old three years from now.