The graph shows the number of non-fiction 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 non-fiction books borrowed by each visitor that Friday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 76 + 91 + 19 + 75 + 114
= 375
(b)
Total number of non-fiction books borrowed
= 2 x 76 + 3 x 91 + 4 x 19 + 5 x 75 + 6 x 114
= 152 + 273 + 76 + 375 + 684
= 1560
Average number of non-fiction books borrowed
= 1560 ÷ 375
= 4.16
≈ 4
Answer(s): (a) 375; (b) 4