Two brothers, Ty and Cam, went to a local bookstore to buy books for school. Ty bought 8 books for $113.92, and Cam bought 6 books for $92.82. They then compared their average cost per book.
Ty paid an average cost of $???
per book. Cam paid an average cost of $???
per book.

So,
paid an average cost of $???
more per book than his brother.