PSLE The bar graph shows the number of storybooks read by a class from April to July. The number of storybooks read in July is not shown.
- What was the percentage increase in the number of storybooks read from April to May?
- The average number of books read in a month from April to July was 60. How many books did the class read in July?
(a)
One interval = 1 u
Increase in the number of storybooks read from April to May
= 7 u - 5 u
= 2 u
Percentage increase in the number of storybooks read from April to May
=
25 x 100%
= 40%
(b)
Total number of storybooks read from April to July
= 4 x 60
= 240
Number of storybooks read from April to June
= 50 + 70 + 50
= 170
Number of storybooks read in July
= 240 - 170
= 70
Answer(s): (a) 40%; (b) 70