The graph shows the number of non-fiction 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 non-fiction books borrowed by each visitor that Wednesday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 38 + 44 + 63 + 52 + 133
= 330
(b)
Total number of non-fiction books borrowed
= 3 x 38 + 4 x 44 + 5 x 63 + 6 x 52 + 7 x 133
= 114 + 176 + 315 + 312 + 931
= 1848
Average number of non-fiction books borrowed
= 1848 ÷ 330
= 5.6
≈ 6
Answer(s): (a) 330; (b) 6