PSLE The bar graph shows the number of storybooks read by a class from August to November. The number of storybooks read in November is not shown.
- What was the percentage increase in the number of storybooks read from August to September?
- The average number of books read in a month from August to November was 65. How many books did the class read in November?
(a)
One interval = 1 u
Increase in the number of storybooks read from August to September
= 8 u - 5 u
= 3 u
Percentage increase in the number of storybooks read from August to September
=
35 x 100%
= 60%
(b)
Total number of storybooks read from August to November
= 4 x 65
= 260
Number of storybooks read from August to October
= 50 + 80 + 100
= 230
Number of storybooks read in November
= 260 - 230
= 30
Answer(s): (a) 60%; (b) 30