conversations.from: human
conversations.value: Solve the following math problem: Sam and Drew have a combined age of 54. Sam is half of Drew's age. How old is Sam?
conversations.from: assistant
conversations.value: Let x be Drew's age.
  Sam is (1/2)x
  x+(1/2)x=54
  (3/2)x=54
  3x=108
  x=36
  Sam is 36/2=18 years old