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
= 18 + 39 + 31 + 35 + 53
= 176
(b)
Total number of story books borrowed
= 5 x 18 + 6 x 39 + 7 x 31 + 8 x 35 + 9 x 53
= 90 + 234 + 217 + 280 + 477
= 1298
Average number of story books borrowed
= 1298 ÷ 176
= 7.375
≈ 7
Answer(s): (a) 176; (b) 7