Question

The late fee at the library is based on the number of days a book is late. Carter paid $1.08 for a book that was 9 days late. If his sister Sydney had a fee of $1.92 for a late book, how many days late was the book?

Answer 1

16 days late

Explanation:

`1.08 / 9 = .12`

So the overdue book charge is 12¢ per day. Letting d be the number of days, we have:

.12d = 1.92

d = 16