conversations.from: human
conversations.value: Emily bought a shirt and a coat for $600. What does the shirt cost if it is one-third the price of the coat?
conversations.from: assistant
conversations.value: Let X be the price of the shirt.
  The price of the coat is X*3.
  The total amount is X + X*3 = $600.
  Combining like terms, we get X*4 = $600.
  Dividing both sides by 4, we get X = $600 / 4 = $150.