<h2>
Answer:</h2>
The percent of the volunteers who were at least 15 years old but no more than 24 years old are:
30%
<h2>
Step-by-step explanation:</h2>
We will make a table based on the histogram:
Age-group Number of students
10-14 3
15-19 2
20-24 7
25-29 8
30-34 5
35-39 5
Hence, the number of volunteers who are atleast 15 years no more than 24 years old are those who come in the age-group 15-19 and 20-24.
Hence, total number of such students= 2+7=9
and the total number of students= 3+2+7+8+5+5= 30
Hence, the percent of volunteers who lie between 15-24 years of age are:
Hence, the answer is: 30%