The graph shows the number of non-fiction books borrowed by visitors at the local library on a Thursday.
- How many visitors visited the local library that Thursday?
- What was the average number of non-fiction books borrowed by each visitor that Thursday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 60 + 75 + 68 + 117 + 39
= 359
(b)
Total number of non-fiction books borrowed
= 2 x 60 + 3 x 75 + 4 x 68 + 5 x 117 + 6 x 39
= 120 + 225 + 272 + 585 + 234
= 1436
Average number of non-fiction books borrowed
= 1436 ÷ 359
= 4
≈ 4
Answer(s): (a) 359; (b) 4