conversations.from: human
conversations.value: Provide a step by step solution for the following math problem: The number of Oreos and cookies in a box is in the ratio 4:9. Zane bought each Oreo at $2 and each cookie at $3. How much more money did Zane spend on buying the cookies than buying the Oreos if the total number of items in the box is 65?
conversations.from: assistant
conversations.value: The total ratio representing the number of cookies and Oreos that Zack bought is 4+9=13
  The fraction representing the number of Oreos Zane bought is 4/13, and since the total number of items in the box is 65, Zane bought 4/13*65=20 Oreos.
  If Zane bought 20 Oreos at $2 each, the total cost of buying Oreos is $2*20=$40
  Since the total number of items in the box is 65, and there are 20 Oreos in the box, the number of cookies in the box is 65-20=45
  The cost of buying the cookies at $3 each is 45*$3=$135
  If the Oreos cost $40 to buy, Zane used $135-$40=$95 more to buy Cookies than Oreos.