The graph shows the number of colouring books borrowed by visitors at the local library on a Saturday.
- How many visitors visited the local library that Saturday?
- What was the average number of colouring books borrowed by each visitor that Saturday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 74 + 131 + 59 + 63 + 48
= 375
(b)
Total number of colouring books borrowed
= 2 x 74 + 3 x 131 + 4 x 59 + 5 x 63 + 6 x 48
= 148 + 393 + 236 + 315 + 288
= 1380
Average number of colouring books borrowed
= 1380 ÷ 375
= 3.68
≈ 4
Answer(s): (a) 375; (b) 4