conversations.from: human
conversations.value: If Beth had $35 more, she would have $105. If Jan had $10 less, he would have the same money as Beth has. How much money do Beth and Jan have altogether?
  How to solve this?
conversations.from: assistant
conversations.value: Beth has $105 - $35 = $70.
  Jan has $70 + $10 = $80.
  So, Beth and Jan have $70 + $80 = $150 altogether.