The graph shows the number of story books borrowed by visitors at the local library on a Tuesday.
- How many visitors visited the local library that Tuesday?
- What was the average number of story books borrowed by each visitor that Tuesday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 60 + 83 + 38 + 93 + 55
= 329
(b)
Total number of story books borrowed
= 1 x 60 + 2 x 83 + 3 x 38 + 4 x 93 + 5 x 55
= 60 + 166 + 114 + 372 + 275
= 987
Average number of story books borrowed
= 987 ÷ 329
= 3
≈ 3
Answer(s): (a) 329; (b) 3