The graph shows the number of novels 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 novels borrowed by each visitor that Saturday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 28 + 18 + 70 + 99 + 55
= 270
(b)
Total number of novels borrowed
= 2 x 28 + 3 x 18 + 4 x 70 + 5 x 99 + 6 x 55
= 56 + 54 + 280 + 495 + 330
= 1215
Average number of novels borrowed
= 1215 ÷ 270
= 4.5
≈ 5
Answer(s): (a) 270; (b) 5