conversations.from: human
conversations.value: Find the answer to the math problem: Marissa bought a ball at the store for $20. If she had $80 on her and used the rest of the money to buy her brother Jimmy, candy bars sold at $5 each, how many candy bars did Marissa buy for Jimmy?
conversations.from: assistant
conversations.value: If Marissa had $80 on her and used $20 to buy a ball, she remained with $80-$20=$60
  If she used the rest of the money to buy candy bars for her brother sold ad $5 each, she bought $60/$5=12 candy bars.