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
= 46 + 44 + 58 + 47 + 55
= 250
(b)
Total number of non-fiction books borrowed
= 4 x 46 + 5 x 44 + 6 x 58 + 7 x 47 + 8 x 55
= 184 + 220 + 348 + 329 + 440
= 1521
Average number of non-fiction books borrowed
= 1521 ÷ 250
= 6.084
≈ 6
Answer(s): (a) 250; (b) 6