Benny had one hundred twenty four dollars to spend on seven books. After buying them he had twelve dollars. How much did each book cost?

The books are $16 each. To figure this problem out you have to start with the facts: Benny has $124, he buys seven books, then ends up with $12 left. So first subtract 12 from 124. That equals 112. Next divide 112 by 7, when you do that is comes out to the answer of 16! So $16 is the answer.