conversations.from: human
conversations.value: Judy uses 10 pencils during her 5 day school week. A 30 pack of pencils costs $4. How much will she spend on pencils over 45 days?
  Give me a detailed solution.
conversations.from: assistant
conversations.value: She uses 2 pencils a day because 10 / 5 = 2
  She will use 90 pencils in 45 days because 2 x 45 = 90
  She will need 3 packs of pencils because 90 / 30 = 3
  She will spend $12 because 3 x 4 = 12