prompt: Snap, Crackle, and Pop spend $150 on cereal in a grocery store.  Snap spends twice as much as Crackle.  Crackle spends 3 times as much as Pop.  How much did Pop spend?
messages.content: Snap, Crackle, and Pop spend $150 on cereal in a grocery store.  Snap spends twice as much as Crackle.  Crackle spends 3 times as much as Pop.  How much did Pop spend?
messages.role: user
messages.content: Let x represent the amount that Pop spent in $
  Crackle: 3x
  Snap:2(3x)=6x
  x+3x+6x=150
  10x=150
  x=15
  #### 15
messages.role: assistant