The graph shows the number of story 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 story books borrowed by each visitor that Saturday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 38 + 95 + 29 + 50 + 38
= 250
(b)
Total number of story books borrowed
= 5 x 38 + 6 x 95 + 7 x 29 + 8 x 50 + 9 x 38
= 190 + 570 + 203 + 400 + 342
= 1705
Average number of story books borrowed
= 1705 ÷ 250
= 6.82
≈ 7
Answer(s): (a) 250; (b) 7