The graph shows the number of colouring books borrowed by visitors at the local library on a Sunday.
- How many visitors visited the local library that Sunday?
- What was the average number of colouring books borrowed by each visitor that Sunday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 124 + 68 + 50 + 123 + 135
= 500
(b)
Total number of colouring books borrowed
= 1 x 124 + 2 x 68 + 3 x 50 + 4 x 123 + 5 x 135
= 124 + 136 + 150 + 492 + 675
= 1577
Average number of colouring books borrowed
= 1577 ÷ 500
= 3.154
≈ 3
Answer(s): (a) 500; (b) 3