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 80. 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
= 9 u - 3 u
= 6 u
Percentage increase in the number of storybooks read from May to June
=
63 x 100%
= 200%
(b)
Total number of storybooks read from May to August
= 4 x 80
= 320
Number of storybooks read from May to July
= 30 + 90 + 100
= 220
Number of storybooks read in August
= 320 - 220
= 100
Answer(s): (a) 200%; (b) 100