The graph shows the number of books 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 books borrowed by each visitor that Wednesday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 120 + 69 + 137 + 23 + 131
= 480
(b)
Total number of books borrowed
= 4 x 120 + 5 x 69 + 6 x 137 + 7 x 23 + 8 x 131
= 480 + 345 + 822 + 161 + 1048
= 2856
Average number of books borrowed
= 2856 ÷ 480
= 5.95
≈ 6
Answer(s): (a) 480; (b) 6