conversations.from: human
conversations.value: Dan spent $32 buying a new backpack, 1 pack of pens, 1 pack of pencils and 5 multi-subject notebooks for school.  If the backpack costs $15 and both the pens and pencils cost $1.00 each, how much did each notebook cost?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: The pens and pencils were $1.00 each so 2*1 = $2.00
  The back pack cost $15 and the pens/pencils cost $2.00 so 15+2 = $17.00
  His total spent was $32 and he has already spend $17 so 32-17 = $15.00
  That means he has $15 left to spend on 5 notebooks so the cost would be 15/5 = $3.00 each