The graph shows the number of fiction books borrowed by visitors at the local library on a Saturday.
- How many visitors visited the local library that Saturday?
- What was the average number of fiction books borrowed by each visitor that Saturday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 50 + 81 + 103 + 121 + 45
= 400
(b)
Total number of fiction books borrowed
= 2 x 50 + 3 x 81 + 4 x 103 + 5 x 121 + 6 x 45
= 100 + 243 + 412 + 605 + 270
= 1630
Average number of fiction books borrowed
= 1630 ÷ 400
= 4.075
≈ 4
Answer(s): (a) 400; (b) 4