The graph shows the number of non-fiction books borrowed by visitors at the local library on a Wednesday.
- How many visitors visited the local library that Wednesday?
- What was the average number of non-fiction books borrowed by each visitor that Wednesday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 80 + 65 + 93 + 54 + 10
= 302
(b)
Total number of non-fiction books borrowed
= 1 x 80 + 2 x 65 + 3 x 93 + 4 x 54 + 5 x 10
= 80 + 130 + 279 + 216 + 50
= 755
Average number of non-fiction books borrowed
= 755 ÷ 302
= 2.5
≈ 3
Answer(s): (a) 302; (b) 3