Fred had $140 dollars to spend on 7 books. After buying them he had 14 dollars. How much did he each book cost?
(140-14)/7 = ?
To find out how much each book cost, we need to subtract the amount Fred had left after buying the books from the initial amount he had.
First, we can calculate how much Fred spent on the books:
Initial amount - Remaining amount = Amount spent on books
$140 - $14 = $126
Next, we need to determine how much each book cost by dividing the total amount spent on books by the number of books purchased:
Amount spent on books / Number of books = Cost per book
$126 / 7 = $18
Therefore, each book costs $18.