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
= 132 + 36 + 10 + 60 + 120
= 358
(b)
Total number of books borrowed
= 3 x 132 + 4 x 36 + 5 x 10 + 6 x 60 + 7 x 120
= 396 + 144 + 50 + 360 + 840
= 1790
Average number of books borrowed
= 1790 ÷ 358
= 5
≈ 5
Answer(s): (a) 358; (b) 5