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?
A step-by-step solution is:
15
Reading 60% faster means John's brother takes 1 +.

6 = 1.

6 times as long as John to read.

So John reads a book in 8 / 1.

6 = 5 hours.

So it would take John 5 * 3 = 15 hours to read 3 books.

.

Thus, the answer is 15