conversations.from: human
conversations.value: Sweet Hope hosts a casino with 3 roulette tables labeled A, B, and C. At 6:00 pm, Table B had twice as much money on it as table C, which had $20 more than table A. If there was $40 on table A, how much money was there on all the tables?
  How to solve this?
conversations.from: assistant
conversations.value: If table C had $20 more than table A, then table C had $20+$40=$60
  Roulette tables A and C had $60+$40=$100
  Table B had twice as much money on it as table C, meaning table B had $60*2=$120
  Together, the three roulette tables had $120+$100=$220