conversations.from: human
conversations.value: Find the answer to the math problem: Thirty students run in a charity race to raise money for the hurricane victims. Ten of the students raised $20 each. The rest of the students raised $30 each. How much did the students raise in all?
conversations.from: assistant
conversations.value: Ten students raised a total of $20 x 10 = $200.
  There are 30 - 10 = 20 students who raised $30 each.
  Twenty students raised a total of $30 x 20 = $600.
  Therefore, the students raised a total of $200 + $600 = $800.