prompt: Peter bought 4 new notebooks for school. 2 of them are green, one is black and the other one is pink. The total cost was $45. If the black notebook cost $15, and the pink one cost $10, how much did the green notebooks cost each?
messages.content: Peter bought 4 new notebooks for school. 2 of them are green, one is black and the other one is pink. The total cost was $45. If the black notebook cost $15, and the pink one cost $10, how much did the green notebooks cost each?
messages.role: user
messages.content: The black and pink notebook cost a total of $15 + $10 = $<<15+10=25>>25
  The green notebooks cost a total of $45 - $25 = $<<45-25=20>>20
  Each green notebook cost $20 / 2 = $<<20/2=10>>10
  #### 10
messages.role: assistant