The graph shows the number of colouring 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 colouring books borrowed by each visitor that Thursday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 100 + 138 + 23 + 108 + 31
= 400
(b)
Total number of colouring books borrowed
= 1 x 100 + 2 x 138 + 3 x 23 + 4 x 108 + 5 x 31
= 100 + 276 + 69 + 432 + 155
= 1032
Average number of colouring books borrowed
= 1032 ÷ 400
= 2.58
≈ 3
Answer(s): (a) 400; (b) 3