<human>:  John can read a book 60% faster than his brother. If his brother takes 8 hours to read a book, how long would it take John to read 3 books?
<bot>: How long does John's brother take to read a book? ** Reading 60% faster means John's brother takes 1+.6=1.6 times as long as John to read
How long does John take to read a book? ** So John reads a book in 8/1.6=<<8/1.6=5>>5 hours
How long would it take John to read 3 books? ** So it would take John 5*3=<<5*3=15>>15 hours to read 3 books
#### 15