PSLE The bar graph shows the number of storybooks read by a class from January to April. The number of storybooks read in April is not shown.
- What was the percentage increase in the number of storybooks read from January to February?
- The average number of books read in a month from January to April was 60. How many books did the class read in April?
(a)
One interval = 1 u
Increase in the number of storybooks read from January to February
= 9 u - 3 u
= 6 u
Percentage increase in the number of storybooks read from January to February
=
63 x 100%
= 200%
(b)
Total number of storybooks read from January to April
= 4 x 60
= 240
Number of storybooks read from January to March
= 30 + 90 + 30
= 150
Number of storybooks read in April
= 240 - 150
= 90
Answer(s): (a) 200%; (b) 90