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
= 112 + 80 + 87 + 138 + 83
= 500
(b)
Total number of non-fiction books borrowed
= 4 x 112 + 5 x 80 + 6 x 87 + 7 x 138 + 8 x 83
= 448 + 400 + 522 + 966 + 664
= 3000
Average number of non-fiction books borrowed
= 3000 ÷ 500
= 6
≈ 6
Answer(s): (a) 500; (b) 6