The bar graph shows the number of storybooks read by the pupils in a school.
- How many pupils are there in the school?
- What percentage of the pupils in the school read at least three storybooks? (Give your answer correct to the nearest whole number.)
(a)
Number of pupils in the school
= 250 + 210 + 230 + 240 + 270
= 1200
(b)
Number of pupils who read at least three storybooks
= 1200 - 250 - 210 - 230
= 510
Percentage of pupils who read at least three storybooks
=
5101200 x 100%
= 42.5%
≈ 43% (Correct to nearest whole number)
Answer(s): (a) 1200; (b) 43%