The graph shows the number of 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 books borrowed by each visitor that Friday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 84 + 27 + 39 + 99 + 26
= 275
(b)
Total number of books borrowed
= 2 x 84 + 3 x 27 + 4 x 39 + 5 x 99 + 6 x 26
= 168 + 81 + 156 + 495 + 156
= 1056
Average number of books borrowed
= 1056 ÷ 275
= 3.84
≈ 4
Answer(s): (a) 275; (b) 4