conversations.from: human
conversations.value: Johnny took his allowance of $20 and added an extra $10 to it.  He then invested this sum of money, which tripled in a year.  How much money did he have after a year?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: Johnny invested twenty and ten dollars for a total of 20+10=30 dollars invested
  Johnny tripled this amount of money over the year, for a total of 30*=90 dollars