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
= 120 + 190 + 130 + 100 + 100
= 640
(b)
Number of pupils who read at least three storybooks
= 640 - 120 - 190 - 130
= 200
Percentage of pupils who read at least three storybooks
=
200640 x 100%
= 31.25%
≈ 31% (Correct to nearest whole number)
Answer(s): (a) 640; (b) 31%