The graph shows the number of novels borrowed by visitors at the local library on a Wednesday.
- How many visitors visited the local library that Wednesday?
- What was the average number of novels borrowed by each visitor that Wednesday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 80 + 122 + 77 + 88 + 97
= 464
(b)
Total number of novels borrowed
= 5 x 80 + 6 x 122 + 7 x 77 + 8 x 88 + 9 x 97
= 400 + 732 + 539 + 704 + 873
= 3248
Average number of novels borrowed
= 3248 ÷ 464
= 7
≈ 7
Answer(s): (a) 464; (b) 7