### Home > APCALC > Chapter 10 > Lesson 10.1.1 > Problem10-6

10-6.

The table below shows the rate of books being checked out (in books per hour) from the local library at various times (in hours) during the day.

 Time Rate $0$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $16$ $39$ $47$ $68$ $81$ $77$ $85$ $62$
1. About how many books were checked out during the day?

This is the area under $b^\prime$.

2. What was the average rate of books being checked out?

$\text{This is }\frac{\text{total books checked out}}{\text{total hours}}.$

You computed the total books check out in part (a).
What is the total number of hours?