conversations.from: human
conversations.value: Katya sold 8 glasses of lemonade and Ricky sold 9 glasses of lemonade. If Tina sold twice as many as Katya and Ricky's combined sales, how many more glasses of lemonade than Katya did Tina sell?
  Solve this problem.
conversations.from: assistant
conversations.value: Katya and Ricky sold 8 + 9 = 17 glasses of lemonade.
  Tina sold 17 x 2 = 34 glasses of lemonade.
  Tina sold 34 - 8 = 26 more glasses of lemonade than Katya