The graph shows the number of 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 books borrowed by each visitor that Saturday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 86 + 12 + 88 + 59 + 83
= 328
(b)
Total number of books borrowed
= 3 x 86 + 4 x 12 + 5 x 88 + 6 x 59 + 7 x 83
= 258 + 48 + 440 + 354 + 581
= 1681
Average number of books borrowed
= 1681 ÷ 328
= 5.125
≈ 5
Answer(s): (a) 328; (b) 5