conversations.from: human
conversations.value: Verna loves to eat fruit. She bought three apples at $1.50 each, five oranges at $0.80 each, and six peaches at $0.75 each.  If she gave $20, how much change did she receive?
  Work out the solution step by step.
conversations.from: assistant
conversations.value: Three apples cost 3 x $1.50 = $4.50.
  Five oranges cost 5 x $0.80 = $4.
  Four peaches cost 6 x $0.75 = $4.50.
  Thus, Verna paid a total of $4.50 +$4+ $4.50 = $13.
  Therefore, Verna received $20 - $13 = $7.