conversations.from: human
conversations.value: Justin bought some jerseys. He bought four long-sleeved ones that cost $15 each, and some striped ones that cost $10 each. How many striped jerseys did Justin buy if he spent a total of $80?
conversations.from: assistant
conversations.value: Four long-sleeved jerseys cost $15 x 4 = $60.
  So the striped jerseys amount to $80 - $60 = $20.
  Hence, Justin bought $20/$10= 2 striped jerseys.