Question

A park ranger observed the number and ages of children who visited the park on a Friday morning. The results of his observations are in the chart. How many children between the ages of 9 and 15 visited the park?

Answer 1

ANSWER

The number of children between the ages of 9 and 15 who visited the park is
$20$


EXPLANATION


The number of children between the ages of 9 and 15 who visited the park are those within the age group 9 to 12 and 12 to 15.


We can from the graph that, the height of the bar that corresponds to the age group 9 to 12

$= 14$
and the height of the bar that corresponds to the age group 12 to 15

$= 6$


The sum of the two frequencies

$= 14 + 6 = 20$