The graph shows the number of story books borrowed by visitors at the local library on a Sunday.
- How many visitors visited the local library that Sunday?
- What was the average number of story books borrowed by each visitor that Sunday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 74 + 129 + 89 + 87 + 95
= 474
(b)
Total number of story books borrowed
= 3 x 74 + 4 x 129 + 5 x 89 + 6 x 87 + 7 x 95
= 222 + 516 + 445 + 522 + 665
= 2370
Average number of story books borrowed
= 2370 ÷ 474
= 5
≈ 5
Answer(s): (a) 474; (b) 5