conversations.from: human
conversations.value: There are one hundred tickets to be sold for a volleyball game. Andrea sold twice as many tickets as Jude while Sandra sold 4 more than half the number of tickets Jude sold. If Jude sold 16 tickets, how many tickets need to be sold?
  Give me a detailed solution.
conversations.from: assistant
conversations.value: Andrea sold 16 x 2 = 32 tickets.
  Half the number of tickets Jude sold is 16/2 = 8.
  So, Sandra sold 8 + 4 = 12 tickets.
  Thus, Andrea, Jude, and Sandra sold a total of 32 + 16 + 12 = 60 tickets.
  Therefore, 100 - 60 = 40 tickets need to be sold.