The graph shows the number of story 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 story books borrowed by each visitor that Friday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 52 + 31 + 118 + 108 + 35
= 344
(b)
Total number of story books borrowed
= 5 x 52 + 6 x 31 + 7 x 118 + 8 x 108 + 9 x 35
= 260 + 186 + 826 + 864 + 315
= 2451
Average number of story books borrowed
= 2451 ÷ 344
= 7.125
≈ 7
Answer(s): (a) 344; (b) 7