<human>:  Lily types 15 words a minute and takes a 2-minute break every 10 minutes. How long does it take for Lily to type 255 words?
<bot>: How many minutes would it take Lily to type 255 words without taking a break? ** It would take Lily 255 words / 15 wpm = <<255/15=17>>17 minutes to type without taking a break.
How many minutes does it take Lily to type 255 words? ** Since Lily takes a break after 10 minutes of typing she takes 17 minutes + 2 minutes = 19 minutes
#### 19