conversations.from: human
conversations.value: In a studio audience of 100 people, 40% of these people have an envelope taped underneath their chairs.  20% of these people will have "You Won" in their envelope, the rest will have empty envelopes.  How many people will win a prize?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: 40% of the 100 studio audience will have an envelope under their chair so .40*100 = 40 people will find an envelope
  20% of these 40 people will find a "You Won" notice so only .20*40 = 8 people will win