conversations.from: human
conversations.value: Carly wants to treat her friends. She orders five hamburgers at $4 each, ten packs of potato fries at $0.30 each pack, and five cans of fruit drinks at $2 each can.  How much change does Carly get back if she gives one fifty-dollar bill?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: The cost of 5 hamburgers is 5 x $4 = $20.
  The cost of 10 packs of potato fries is 10 x $0.30 = $3.
  And, the cost of 5 cans of fruit drinks is 5 x $2 = $10.
  Thus, the total cost is $20 + $3 + $10 = $33.
  Therefore, Carly gets a change of $50 - $33 = $17.