PSLE The bar graph shows the number of storybooks read by a class from May to August. The number of storybooks read in August is not shown.
- What was the percentage increase in the number of storybooks read from May to June?
- The average number of books read in a month from May to August was 50. How many books did the class read in August?
(a)
One interval = 1 u
Increase in the number of storybooks read from May to June
= 6 u - 4 u
= 2 u
Percentage increase in the number of storybooks read from May to June
=
24 x 100%
= 50%
(b)
Total number of storybooks read from May to August
= 4 x 50
= 200
Number of storybooks read from May to July
= 40 + 60 + 60
= 160
Number of storybooks read in August
= 200 - 160
= 40
Answer(s): (a) 50%; (b) 40