conversations.from: human
conversations.value: Ali's class wants to order 35 English textbooks and 35 geography textbooks. Knowing that a geography book costs $10.50 and that an English book costs $7.50, what is the amount of this order?
  What is the solution?
conversations.from: assistant
conversations.value: The cost of the geography books is 35 * 10.5 = $367.5.
  The cost of the English books is 35 * 7.5 = $262.5.
  The total amount of the order is 367.5 + 262.5 = $630.