The graph shows the number of story 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 story books borrowed by each visitor that Wednesday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 10 + 52 + 95 + 20 + 113
= 290
(b)
Total number of story books borrowed
= 1 x 10 + 2 x 52 + 3 x 95 + 4 x 20 + 5 x 113
= 10 + 104 + 285 + 80 + 565
= 1044
Average number of story books borrowed
= 1044 ÷ 290
= 3.6
≈ 4
Answer(s): (a) 290; (b) 4