<human>:  Last week, the price of a movie ticket was $100. This year the price is down by 20%. What's the new price of the movie ticket?
<bot>: How much is the price of the book down by? ** The price of the book is down by: 100*0.2 = $<<100*0.2=20>>20.
What is the new price of the movie ticket? ** So the new price of the movie ticket is: 100 - 20 = $<<100-20=80>>80.
#### 80