Trevor paid a total of $1.08 in fines for an overdue library book. If the penalty for overdue books is $0.09 per day, how many days late was the book?

Question

2 days
8 days
12 days
20 days

Answer 1

To find out how many days late the book was, we need to divide the total fines paid by the daily penalty for overdue books.

The total fines paid is $1.08, and the penalty per day is $0.09.

Calculating the number of days:

$$\text{Number of days late}=\frac{\text{Total fines}}{\text{Penalty per day}}=\frac{1.08}{0.09}$$

Calculating the division:

$$\frac{1.08}{0.09}=12$$

Thus, the book was 12 days late.

The correct answer is 12 days.