conversations.from: human
conversations.value: Can you guide me through solving this problem: A house and a lot cost $120,000. If the house cost three times as much as the lot, how much did the house cost?
conversations.from: assistant
conversations.value: Since the house costs 3 times as much as the lot, the ratio of lot price to the house price is 1 : 3. This also means 1/4 of the cost is for the lot and 3/4 of the cost is for the house.
  The cost of the house is 3/4 of the total cost, which is $120,000. 3/4 * $120,000 = $90,000.