The graph shows the number of story books borrowed by visitors at the local library on a Friday.
- How many visitors visited the local library that Friday?
- What was the average number of story books borrowed by each visitor that Friday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 28 + 65 + 90 + 24 + 43
= 250
(b)
Total number of story books borrowed
= 2 x 28 + 3 x 65 + 4 x 90 + 5 x 24 + 6 x 43
= 56 + 195 + 360 + 120 + 258
= 989
Average number of story books borrowed
= 989 ÷ 250
= 3.956
≈ 4
Answer(s): (a) 250; (b) 4