conversations.from: human
conversations.value: Kyle bought last year's best-selling book for $19.50. This is with a 25% discount from the original price. What was the original price of the book?
conversations.from: assistant
conversations.value: Let X be the original price of the book. The discounted price is X - X*25% = $19.50.
  Combining like terms, we get .75X = $19.50
  Dividing both sides by .75, we get X = $26.