Tamariki ages

This task is about interpreting a bar graph.
 
Susan and Marie wanted to find out the ages of all the children at Ormond School.
This is what they found out:
 

  5 year olds

6

  6 year olds

12

  7 year olds

10

  8 year olds

15

  9 year olds

9

10 year olds

13


a)

Put this information on the graph below.
The first bar has been done for you.
 

Ages of Children at Ormond School

 

b)
What is the most common age of the children at Ormond School? __________
 
c) Altogether how many children are either 5 or 6 years old? __________